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What is the third external connector besides the power and SATA connectors ?

I unfortunately destroyed my SATA (7 pin) connector. I wonder what is the third (15 pin) connector; could I possibly use it ? Thanks -jiri

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In some cases an IDE connector is added to RAID Hard Drives or Industrial grade desktop computer drivers.. it's a backwards compatibility measure in case of failure.

Other driver may also include an IDE power source too..

Those IDE connections are also known as (PATA) or Parallel.

Posted on Nov 21, 2014


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Posted on Jan 02, 2017

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SOURCE: Maxtor hard drive needs a chip replacing

Unless you can find the matching chip and are good at soldering these small parts, it can be replaced.

Typically, I would suggest looking for busted harddisks (of the same model) and if their board was still good, just do a direct swap. I did this for a Fireball model HDisk.

Or if their board is busted, you can get the chip from them and, like I said earlier regarding soldering, solder it onto your Hard disks. This is considering that the only part busted was this chip.

Posted on Jan 23, 2008

  • 696 Answers

SOURCE: HP Pavilion laptop won't detect my External SATA Hard drive


Sounds like you have a proper adapter. Also thanks for the Vista info, although that's not helping it did rule out one major possibility.

Unless you have another drive to try on the adapter, or another adapter to try with your drive it will be difficult to isolate which one is the problem.

First thing to do is, with the drive connected to the new computer open your start menu, hover the mouse over Computer, right click on Computer then select Manage from the grey menu.

When the managment console opens click on disk management on the left then maximaize the window size. Wait a moment for windows to assess the drives in the system then scroll through the list. You should see your windows drive(it will have one large partition and usually one small one as well, a DVD drive and up to 5 media drives(they represent each type of memory chip your card reader can use.

Now look for a second entry similar to your boot partitions drive on the lower half of the screen(C: is boot). If the external hard drive is listed there you're in good shape, report back with all the details in the row that drive is on starting with the disk number

ex: Disk 0, Basic, 80GB, Online, C: 70GB, NTFS D: 8GB, NTFS

If the drive doesn't show up on the disk manager, go to the device manager on the left above Disk Manager, Expand Both the disk Drives section and the USB section and report back what is listed in each. You can ignore the entries in USB for USB host controller, just report them as there, how many and if they are listed as USB or USB2.

Reply back when you have this information and I will take you through the next few steps acording to what you find.


Posted on Jan 10, 2010

  • 32281 Answers

SOURCE: I have lost the external power supply for my 1TB

The voltages are right because hard drives use 12volts for the motor drive and 5volts for the digital logic circuits.
The only thing I don't know is the correct voltages for the various pins, there is a possibility it may not suit the LaCie.
This maybe a standard configuration for external USB hard drives, you need to check with LaCie.

Posted on Feb 08, 2010

  • 5 Answers

SOURCE: What external power does SmartDisk FireLite FWFL120-N take?

Many USB power supplies will have the right plug. I picked one up by buying a cheap USB hub, What you want to look for (most likely on the bottom of the power supply) is VOLTAGE Output: 5.0 VDC, POWER Output: 1.0 amp or (1000ma) and the center hole is the positive side. I have even seen some BluTooth earpiece charges that supply what you need.

Hope that this will help.

Posted on Aug 08, 2010

  • 22 Answers

SOURCE: i am having several sata

Many older sata drives have two power connectors.

These are

Sata (Data)
Sata (Power)
Moles (Power)

The reason for this is that when SATA drive first came around many power supplies had many molex connectors and usually only one SATA power connectors.

If you were to need multiple drives this would force an upgrade of you psu or use 2 Molex to 1 Sata adaptors.

The simple answer is that HDD manufacturers did this to make life easier on the customer and to avoid any product returns due to poor buying decisions.

Please also make sure to only use one of the power connectors. Using both will likely not cause harm but is unneccessary,

Posted on Feb 28, 2011

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Find socket for hard drive

HP part number 5188-5473 brings up the Asus A8N-LA motherboard, made especially for HP,

The rest of the number/letters do me no good.

I will elate some information based on the above, and see if it does you any good;

1) The Asus A8N-LA has connectors for two types of Harddrives;

A) IDE. Also known as PATA.

This type of Harddrive uses a flat ribbon IDE(PATA) data cable,

Another look,

(The Asus name probably won't be on it. These two IDE data cables just happen to be made by Asus )

The connectors on each end have 40 socket holes. One socket hole will be blocked off. (Or should be) ONLY 39 socket holes are used.

A look at the connector on the motherboard;

Looking at the motherboard illustration, look at the Bottom/Right corner. There are two IDE connectors. They are marked as IDE 1, and IDE 2.

Scrolling down a little bit to the motherboard photo, you will see IDE 1 connector is Black in color, and IDE 2 is Blue in color.

The IDE (PATA) harddrive's data cable goes to IDE 1.
Optical drive/s (CD/DVD drive) goes to IDE 2.

This is the type of power cable from the Power Supply, that goes to an IDE (PATA) harddrive,

There is usually a square, or rectangle, or two bumps; used on the IDE ribbon cable connector, to line up with the connector on the motherboard, or harddrive, or optical drive.

It is called a Locating Lug.

This particular IDE data cable connector, has two raised bumps, for a Locating Lug.

It lines up with a Cutout in the motherboard's connector, or the harddrive's connector, or the optical drive's connector.

IF, there is NO Locating Lug, use the faint Red stripe on the side of the IDE data cable.
The red stripe is on the same side as Number 1 wire.

Number 1 wire goes to number 1 pin.
On a harddrive, or optical drive, number 1 pin is ALWAYS closest to the power cable connection,

Looking at the photo number 1 pin is on the Right side. It is closest to where the 4-pin Peripheral power cable plugs in.


Looking at the motherboard photo, the Yellow, and Blue, and Black, and White connectors; to the left of the Blue IDE connector, and Black IDE connector; are SATA connectors.

SATA 1 is Black. This is where the SATA harddrive's data cable, is supposed to plug in.

The BEAUTY of SATA though, is that you can plug the harddrive into ANY of those SATA connectors on the motherboard, and BIOS will find the harddrive. (Or any other peripheral device)

An example of a SATA data cable, and it's connector,

The red SATA connector shown below the SATA cable example, is just a different style of SATA motherboard connector; than what your motherboard uses.

Note the L-shaped opening in the SATA data cable's connector.
Lines up with the L shape on the motherboard connector, or harddrive connector, or optical drive connector.

Most SATA data cable connectors, also have a Lock on them.
Sometimes it's a Lock you can easily see.

Most times, it is a small depression you depress with your thumbnail, or a little 'bulb' you depress.
Depress/unlock to plug the cable in, or remove the cable.

The 90 degree angle connector end, (As shown), plugs into the harddrive, or optical drive. The Straight connector end plugs into the motherboard.

This is an example of a SATA power cable,

Between it, and the SATA data cable connector, it is the larger of the two.
SATA power cable connector has 15-pins.
SATA data cable connector has 7-pins.

Also note the rectangular depression on the SATA power cable's connector. That is where you depress to unlock the connector.
The SATA power cable's connector also has an L-shaped opening.

2) IF, you are trying to hook up a laptop harddrive to this motherboard, you need to determine if the laptop harddrive is an IDE (PATA) type, or a SATA type.


There is a label on the laptop harddrive. It has the manufacturer code on it. Type the number/letters in your browser search bar, and click on the search icon. (Magnifying Glass)

Now purchase an external enclosure.

The external enclosure opens up, and the laptop harddrive goes inside, and plugs into an interface.

Close the external enclosure, and plug it's USB cable into any available, open USB port on your computer.

It will be a 2.5 external enclosure.
Harddrive's are measured across their width.

A desktop harddrive is 3.5 inches across in width.
A laptop harddive is 2.5.

Example of a 2.5 IDE (PATA) external enclosure,

Example of a 2.5 SATA external enclosure,

For additional questions please post in a Comment.


Jan 28, 2013 | HP Compaq Motherboard

1 Answer

Connections to the hard drive

The Harddrive is a SATA unit.

Uses a SATA data cable, and a SATA power cable.

SATA data cable, and connector on motherboard, example;

Between the SATA data cable connector, and the SATA power cable connector; the SATA data cable connector is the shorter of the two in width.
SATA data cable connector has 7-pins.
SATA power cable connector has 15-pins.

The connector end used on the harddrive side, and optical drive side, (CD/DVD drive), is usually a 90 degree Bent Elbow.
The connector end that plugs into the motherboard, is a Straight connector.

NOTE* Color of connectors does NOT matter.
Most of the time the SATA data connectors on the motherboard, are different colors.

This is to help discern what number of SATA data connector it is.
Four SATA data connectors on the motherboard?

SATA 1, SATA 2, SATA 3, and SATA 4;
SATA 0, SATA 1, SATA 2, and SATA 3?

SATA 0, or SATA 1, is usually reserved for the Harddrive.
The Primary harddrive with the Operating System on it.
(Unless you have harddrives set in a RAID configuration)

DOES NOT MATTER WHAT SATA DATA CONNECTOR, you plug into, on the motherboard.

Want to plug the harddrive into SATA 3, or SATA 4?
Go ahead.
NO matter what SATA connector on the motherboard that you plug into, BIOS will find the harddrive.

Note the L-shape in the connector.
Has to line up on the L-shape on the harddrive, optical drive, or motherboard, SATA data connector.

There is usually a lock on the connector. This you may not see.
Sometimes there is a little 'bump' on the connector. Depress with the thumbnail to install the cable, or remove.

This is an example of a SATA power cable,

IF, your SATA harddrive has a provision for plugging in a SATA power cable, AND a 4-pin Peripheral power cable; ONLY plug the SATA power cable in.

Using BOTH types of power cables will BURN the harddrive up.
May not happen right away, but I assure you it will happen.

For additional questions please post in a Comment.

Dec 10, 2012 | Acer Aspire X1 AX1470-UR11P Desktop PC...

2 Answers

Ecs-mcp61pm-am motherboard wiring diagram

Open in two different windows.

The Top link is for a clear photo of the motherboard, and the letter designations.
The Bottom link is a navigation guide for those letter designations, HOWEVER they do NOT match up. I will guide you using both links.

1) Go to the Top link - Main View
Look at the right side for letter R.
This points to the 24-pin ATX main power cable's connector, on the motherboard.

In the second link - Hardware Details - it is letter
J- Main Power Connector

This is a general example of a 24-pin ATX main power cable, and it's respective connector on the motherboard,

(NOTE* Color never matters)

Note that there is a Lock on the side (Middle), of this main power cable's connector.
There is also a matching Tab on the motherboard connector.

To remove this power cable the top of the Lock is squeezed in. This action brings the Lock's hooked end away from the Tab, on the motherboard connector.
The Lock operates like a see-saw on a playground.

2) Go towards the Top/Middle to the letter C, in the Main View.
This points to the 4-pin ATX +12 Volt power cable's connector, on the motherboard.
In the Hardware Details it is the letter C also.
C - Auxillary 12V ATX Connector

This is a general example of a 4-pin ATX +12 Volt power cable, and it's respective connector on the motherboard,

Note that it has a Lock, and the motherboard connector has a Tab, also.

That's it for power cables TO the motherboard.

3) Since there is only one IDE (PATA) connector on the motherboard, I'm going to assume you are using a SATA harddrive.
Uses a SATA power cable,

Note that a SATA power cable's connector has 15 contact pins.
Between it, and a SATA data cable's connector, the SATA power cable's connector is longer.
Note also the L shape inside the connector.
There is also a Lock tab you depress on the cable's connector, when unplugging it.

4) General example of a SATA data cable, and it's respective connector on a motherboard,

You can see the L shape a little better here. A SATA data cable has 7 contact pins.
The connector shape usually used on the Harddrive, is a 90 degree bent elbow.
The straight connector end is plugged into the motherboard's SATA connector.

In the Main View the letter U is the SATA connector designator.
Look to the left of the Front Panel connector, designated by the letter T.
Those four Orange connectors are SATA connectors.

The Harddrive usually plugs into SATA 1. In Hardware Details this is shown by the letter L.
L- SATA Connectors

Looking closely you can see the SATA 1 connector, is at the Bottom of the motherboard.
However the beauty of SATA is, that you can plug the harddrive into any of those SATA connectors, and BIOS will find it.

In the Main View the letter S on the right side, points to where a computer case fan plugs in.
(Chassis Fan)

The letter F in the middle, points to where the Processor (CPU) fan connects.

J is for the Front Audio Connector. (Audio ports on Front Panel of computer)
K is where a Card Reader would plug in.
This is the kind of power cable a Floppy Drive, and a Card Reader uses,

L points to where the Firewire ports connect to.
(IEEE 1394 Connector)

The letter O points to where the Front Panel USB ports connect to.

Going back to the letter T - Front panel Connector, in the Main View.
Go to Hardware Details, and click on -
M - Front Panel connector

4 pins on the Left side, 5 pins on the Right side.
The pins on the Left side are numbered EVEN.
The pins on the Right side are numbered ODD.

Starting at the BOTTOM on the Left side, going towards the Top;
Pins 2, 4, 6, and 8. No Pin 10.

Starting at the Bottom on the Right side, going towards the Top;
Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the HarDDrive activity LED. (Light)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

C) Pin 9 is N/C.
Not Connected. 5 Volt test for the factory

D) Pins 2 and 4 are for the Power On LED. (Light)
Pin 2 is for the Positive ( + ) wire. If the PWR LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

For additional questions please post in a Comment.


Oct 04, 2012 | Intel Motherboard

1 Answer

Need a HP Pavillion a1514n wiring diagram

Not a problem, Dawn.

HP Support > Pavilion a1514n desktop computer > Main page,

Product information > Product specifications > Motherboard specifications, RC410-M (Asterope 2)

Scroll down to the motherboard illustration, and motherboard photo under it.

A) 24-pin ATX main power cable:

Look to the right of the Ram Memory slots, DIMM 1 and DIMM 2.
Look at the rectangle with ATXPWR1

Scroll down a little to the motherboard photo.
To the right of the black Ram Memory slots, with the white Locks on each end, is the 24-pin ATX main power cable connector on the motherboard.

Whitish connector with 24 socket holes. Two columns of 10 socket holes.
This is an example of an average 24-pin ATX main power cable, and it's respective connector on the motherboard,

[Note* Color of connectors does NOT matter ]

Note the power cable connector in the middle photo, and the photo to the far right with the power cable plugged into the motherboard.

Note the Lock on the side.
The Lock has a hooked end that goes over a tab, on the motherboard's connector.
The Lock operates like a see-saw on a playground.

Squeeze the top of the Lock in, to bring the hooked end away from the tab on the motherboard connector, when removing the power cable.
When the power cable is plugged into the motherboard correctly, and properly, the Lock will be locked over the tab.

B) 4-pin ATX +12 Volt power cable:

The Processor socket is represented by LGA775.
To the left of it is ATX12V

In the motherboard photo it is the square whitish 4-socket hole connector, to the bottom left corner of the Processor socket.

This is a general example of a 4-pin ATX +12 Volt power cable, and it's respective connector on the motherboard,

Note that it has a Lock also.

That's it for power cables that plug into the motherboard.

Product specifications specifies that the harddrive is a SATA unit.
It uses a SATA power cable from the Power Supply,

Note that a SATA power cable's connector has 15-pins, and has the longer connector when compared to the SATA data cable.
The SATA data cable's connector has 7-pins.

Example of a SATA data cable, it's connector, and matching connector on the motherboard,

Note the SATA data cable connector, and it's matching connector on the motherboard have an L-shape key.
So does the SATA power cable, and whatever it plugs into.
(Harddrive / Optical Drive )

This is an example of a 4-pin standard Peripheral power cable.
Has been misnomered as a 'Molex' power cable,

IF, your SATA harddrive has a provision for a SATA power cable, AND a 4-pin Peripheral power cable, ONLY use just the SATA power cable.
Using both will burn up the SATA harddrive.
(Maybe not right away, but I assure you it WILL happen)

Do not use just a 4-pin Peripheral power cable on a SATA harddrive.
NOT enough power.

The Optical drive (DVD burner) is not stated whether it is a SATA unit, or IDE. (PATA)
If it is an IDE (PATA( unit it will use a 4-pin Peripheral power cable

It will also use a 40-pin flat ribbon data cable,

[May be 39 holes with 1 hole blocked off ]

CPU_FAN on the motherboard up above, and to the right of the Ram Memory slots, is where the Processor fan plugs into.

SYS_FAN below the processor socket, and to the right of ATX12V connector on motherboard, is for a computer case fan.

A computer case fan can also use a 4-pin standard Peripheral power cable, with an adapter cable, or may use a 4-pin small Peripheral power cable,

This power cable is also used for a Floppy Drive, and for newer computers is used on a Card Reader.

For additional questions please post in a Comment.


Sep 24, 2012 | Computers & Internet

2 Answers

Cannot find the sata plug on motherboard

A SATA harddrive uses a SATA power cable,

(15-pins, long connector. Harddrive side connector is usually a 90 degree elbow,

Cables are usually Red with Black connectors, but cable, and connectors can be ANY color )

,and a SATA Data cable,

A SATA Data cable has the shorter connector. It has 7-pins.

{ SATA power cable provides power to the SATA harddrive.
The SATA Data cable is the information cable. Data,..information, is transferred back, and forth across this cable }

This is a 4-pin standard Peripheral power cable. The connector on the end of the cable is referred to as a 'Molex' connector.
(It is a misnomer. Molex was the first design name, from the first company who made it. The name stuck. Kind of like calling an open-end adjustable wrench, a Crescent wrench ),

IF, the SATA harddrive has a provision for plugging in a 4-pin standard Peripheral power cable, AND a SATA power cable,


Otherwise you will burn up the SATA harddrive. (Maybe not right away, but I assure you it eventually will happen)

The connectors on the end of the SATA power cable, and SATA Data cable, have an L shape on the inside.

This L shape needs to be matched up with the L shape on the harddrive for the SATA power cable, and harddrive AND motherboard, for the SATA Data cable.

The beauty of SATA technology;

IF, there is more than one SATA connector (Header) on the motherboard, the harddrive can be plugged into ANY one of them.

For example if there are 4 SATA headers on the motherboard;
They can be labeled SATA 1, SATA 2, SATA 3, and SATA 4,
SATA 0, SATA 1, SATA 2, and SATA 3.

The harddrive usually plugs into SATA 0, or SATA 1.

With the SATA technology however, you can plug into ANY of them, and BIOS will find the device. (In this case a harddrive)

For the HP Compaq Business Desktop D330 computer, the motherboard is an Asus A8SN-CF (HP/Compaq name = Phoenix),

All I see is one SATA header (Connector) on the motherboard. It is at the top right area, and is Black in color.
(Right below the thin green label on the edge of the motherboard, at the top. Third connector from the right)

Go down, and click on the + sign to the left of -
Motherboard Layout.

Look at the Top, and third connector over from the Right side.
You can barely make out - SATA1.

Motherboard installed in the computer case, the SATA 1 header (Connector) is at the Bottom of the motherboard.
Third connector (Black) over from the left side.

For additional questions please post in a Comment.
(Remember, there is NO such thing as a silly question)


Jan 16, 2012 | HP Compaq Business Desktop d330

2 Answers

How to install 2 t hard drive in computer compaq

A 2Tb hard disk will be a SATA hard drive. If your PC Desktop does not have a SATA disk controller then your have a couple of options.

1. Insert a SATA controller card into the PCI expansion slot, mount the SATA hard drive inside the PC case and then connect the SATA hard drive to the controller (you will also need a 4 pin power to SATA adapter cable) and install the SATA controller driver.

2. The other option (and the easiest) is to purchase an external USB 2Tb hard drive. All you need to do is, plug it into the USB port of your computer and it will see it as an external storage device.

Oct 22, 2010 | Computers & Internet

1 Answer

Bought internal harddrive and don't know where 7-pin SATA port is on motherboard, or Sata power connector is from PC.

hi, sorry to tell you this but that model of dell desktop does not have sata ports or sata power connectors and has no spare drive bays to mount the hard drive either , you would be best to try and return the drive and purchase an external hard drive and connect it to your PC via the usb socket .
Hope this helps

Apr 24, 2010 | Dell Dimension B110 PC Desktop

3 Answers

My unit is not powering on. I plugged in an 18v power supply into the unit and it was on for a few seconds and then shut off. Did I burn out the unit?

This solution will be rather lengthy. I apologize for the length of it in advance, but feel it is necessary to explain my possible solution.
Please bear with me.

Inside the external harddrive case is a SATA harddrive.
The SATA harddrive plugs into a small circuit board, via an interface connector, OR small cables.

[Interface Connector.
On the back of a SATA harddrive are metal pins that stick out. The ones to be concerned with are the 15 pins for Power, and the 7 pins for Data. The 15 pins for Power are grouped together, as well as the 7 pins for Data. An Interface is simply a connector that has socket holes in it, that the pins stick into.

If you have never seen a harddrive, much less a SATA harddrive, the above statement will be as clear as mud.
Let me show you the pins on the back of a SATA harddrive, to help clarify this,

Under the heading - Serial ATA Signal Assignments, view the illustration.

On the right you will see the Power Cable, headed towards the Power Connector. If you could enlarge this illustration you would see there are 15 pins.

On the left you will see the Signal Cable, headed towards the Signal Connector. Again, if you could enlarge this illustration you would see there are 7 pins. Signal is also Data.

(Data = Information. Information is processed back, and forth to the harddrive through this cable)

An Interface connector is rectangular in shape, and has socket holes to fit these pins.

Or, as stated above, it may have two small cables as shown in the illustration, and they plug into the Power, and Signal (Data) pins.

Either an Interface connector, or two small cables lead up to a small circuit board.

IT MAY BE that you are fortunate, and the circuit board bore the brunt of the overload of voltage, and did not get to the SATA harddrive inside.

My suggestion would be what I would do myself. This suggestion may not be what you would do.

I would open the external harddrive case, and look for obvious signs of electronics failure on the circuit board, and on the harddrive itself.
The harddrive also has a circuit board. It's on the bottom of the harddrive.

If you see obvious signs of damage such as,
1.Black marks on any of the various electronic components, or 2.Electronic components that have melted, swelled up, or look burned,
on the circuit board of the SATA harddrive, then you may want to stop here.

The 'cure' may be more costly, than the information you have saved on this external harddrive.

IF, the circuit board of the SATA harddrive looked good to me, I would risk a small amount of money, to see if I could get the harddrive to work again.
Again, just my personal preference, and not direct advise that this is what you should do.

I would buy an External Enclosure, and install the SATA harddrive in it. The External Enclosure also has a circuit board inside, and uses a USB cable to connect to the computer, just like the External harddrive that you have now.

Average cost for a decent external enclosure for a SATA harddrive is around $30 USD.

Here is an example, (Not an advertisement for the external enclosure manufacturer, or said website),

The external enclosures come with info about how to open the enclosure, and install the SATA harddrive.

Should you have gotten this far, thank you for your time.

Nov 21, 2009 | Western Digital My Book Essential 1TB...

1 Answer

I have 3in1 USB 2.0 to IDE & SATA Cable but nothing to show me how to use this kit


1 external connection kit
1 internal connection kit

The internal connect kit consists of 1 red USB connector cable
and 1 internal white male molex connector to SATA female power connector
( 1 yellow wire , 2 black wires , 1 red wire )

the external connect kit
consists of a 3 pin power adaptor (with a tiny plug to save space) feeding a power supply which powers either IDE thru a Molex connector or SATA through a supplied adaptor. Supplied also are data connectors to link the IDE or SATA hard drive with a USB port. Use this adaptor set to retrieve data from a hard drive when it is not mounted in a computer.

Selah :-)

Sep 14, 2008 | Computers & Internet

6 Answers

Sata, ide

Update: SATA II drives do have jumpers to make them backwards compatible with 1.5 Gb/s (SATA II drives are 3.0 Gb/s). So if your system is older and can only handle SATA (first Gen) then you have to add a jumper (Seagate has the jumper setting on the drive but sometimes supplies no jumper i.e. you have to have your own).

Sep 30, 2007 | Computers & Internet

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