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What power input is required?

DSE 4- Port USB 1.1 Hub XH7931 but the power supply is missing and I'm not sure what to plug into it?

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: 7 port usb hub

try to find if anything is written about that on the back of the HUB ,, or beside the power outlet

Posted on Dec 31, 2007

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SOURCE: USB hub

Do you have Windows XP and at least Service pack 2 installed.
Service Pack 2 comes bundled with the neccessary drivers for USB 2.0
In device manager under the USB heading you must have:
PCI to USB Enhanced Host Controller
In the list.

Posted on Jul 22, 2008

  • 2 Answers

SOURCE: Installing USB Hub

finsphan72's response is correct but you could use information one step earlier. 
USB 1.1 is the older version of USB.  USB 2.0 is newer and much faster.  Your computer has hardware in it to talk to USB.  Because it is an older computer, it has USB 1.1 hardware.  
The USB hub is just a splitter.  It lets you plug in several USB devices while only using one USB port in your computer.  But it doesn't change the fundamental capabilities of your computer. 
The only way to get a computer with USB 1.1 built-in to support USB 2.0 is to add a USB 2.0 card to the computer.  This is an open up the computer and install a piece of hardware operation.  It isn't very hard and it isn't very expensive, but it might not be something you are comfortable doing (and it is possible to mess things up - you probably wouldn't, but you could).  Maybe this is an "ask a high school age friend for a favor" sort of situation.   

Posted on Nov 07, 2008

Geekman
  • 32281 Answers

SOURCE: Power supply for Targus 4 hub usb 2

Most USB hubs do not need an external power supply, except when a connected USB device draws more power than the computer/laptop USB port can supply. In this case an external power supply will need to be connected to the USB hub.
Normally this would be a 5 volt power supply, but make sure the polarity on the connector matches the power connector on the hub, check the label on the hub, sometimes it states to power requirements of the hub as well as the polarity on the connector. Normally the pin on the hub's power connector is positive (ie. +5V)

Posted on Nov 13, 2008

anandg27
  • 1272 Answers

SOURCE: 4 port USB hub not working...

Try connecting the hub to another USB port. You may even connect this same device to another computer and check if that works. This will help isolate the issue better.

Posted on Jun 23, 2009

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Need power supply for kensington PocketHUB 7 Port USB


The K33366 POCKETHUB 7 PORT HI-SPEED USB HUB requires a 5volt supply at 4amps

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The power supply is a 5 VDC, 500 mA (outer negative, inner positive) commonly used for mp3 players, but probably you must cut the mini usb plug and adapt a compatible jack with the hub.

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hi YOU CAN FIND THE SOLUTION FOR YOUR HUB
Warranty Period : Lifetime Warranty Integrated/Included Cable Length : 1.8m Belkin Pro Series USB Device Cable LED Indicators : 1 x Power LED (Green), 4 x Port Indicator LEDs (Green) Max. Load Per Port : 500mA Package Contents : USB 4-Port Hub, USB Device Cable (A-B), User Guide, Power Supply Power Supply Specifications : 5 V DC 4 A (Provided) Option to Expand/Cascade : Yes, via Hubs of this design (stackable) or other Enclosure Type : High-Impact Plastic Enclosure

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I have a Q-Stor 7 port USB hub, Model QU2RCT7. I


I don't have the original power supply for my QU2RCT7 either, but most hubs use a 5v DC power adapter, typically with a 2A. (2 amp) rating. I'm using such an adapter with my QU2RCT7 and it works fine. Make sure the adapter you select is tip-positive (ie, the "+" terminal is the "tip," or center, of the connector).


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1 Answer

4 port HUB is connected. My computer doesn't show it. Help! It is all plugged in with USB cable and when I go to MY COMPUTER it doesn't show.


The hubs usually show up in the hardware list and not as a seperate device. Only way to know it is there is to plug a usb device into it.

I devised these simple steps that tend to remedy quite a few issues with most USB portable / external hard drives and devices (though not always)

A few things to check but assumes USB and Windows for other interfaces / operating systems similar steps may be adapted to suit.

1. Ensure it is connected directly to the computer to a USB 2.0 port not a USB 1.0 port as this can have effects on performance and reliability

2. Use only the cables that came with it NOT one that fits that may have been lying around or is longer. Not all USB cables are equal even though they should be)

3. Do not connect through an external USB HUB unless that hub is USB 2.0 AND has its own power supply.

4. Use ONLY the power supply that came with it if it has an external power supply Don’t use any other unless you know it has both the same voltage and current rating e.g. 12V 500mA anything rated below that would not work properly.

5. Always use the same port for connecting your devices. Some devices do not like being switched about. If switched they may want to install software / drivers again. This can be especialy true if you move a HUB to another port

If you checked and fixed anything there and still have issues then check your hardware from CONTROL PANEL / SYSTEM / HARDWARE.
Any exclamation marks by hardware need fixing before you investigate any further

Sep 05, 2009 | CyberPower CPH420P 4-Port USB Hub

8 Answers

Power supply for Targus 4 hub usb 2


Most USB hubs do not need an external power supply, except when a connected USB device draws more power than the computer/laptop USB port can supply. In this case an external power supply will need to be connected to the USB hub.
Normally this would be a 5 volt power supply, but make sure the polarity on the connector matches the power connector on the hub, check the label on the hub, sometimes it states to power requirements of the hub as well as the polarity on the connector. Normally the pin on the hub's power connector is positive (ie. +5V)

Nov 13, 2008 | Targus PAUH217U 4-Port USB Hub

2 Answers

Installing USB Hub


After installing the USB controller card into a PCI slot inside your computer, connect the 4 port hub to it with the supplied cable. (at the back of the computer)
Do not connect the DVD Recorder to the old usb ports. They will still work, but obviously not 2.0.

Connecting the power supply for the hub is optional, but usually a good idea.

If your computer still doesn't recognize the hub, make sure you have all of the latest windows updates and try running Add New Hardware in control panel. Also, just unplugging the hub and plugging it back in will sometimes work. Use a different port on the controller card if necessary.

As a last resort, you may need to disable the onboard usb controller through your system bios.

Good Luck

Sep 11, 2008 | CyberPower CPH420P 4-Port USB Hub

1 Answer

I purchased a Targus USB 4-Port hub for use with my iMac 24" computer (new), using iMac OS 10.5.2. There is a power input connector on the hub, but no mention of power requirements on the package...


Dear John,
this USB hub don't need any external power, but you are right there is a power input connector comes with every Targus Usb hub. but these hub self powered . you can use this hub without any worry.

Regards

Apr 26, 2008 | Computers & Internet

1 Answer

Power sugre with m240


Hi there. This message would indicate any one of the following: 1. You have a lot of USB devices plugged in to your computer, and the maximum power supply for the USB ports has been exceeded by plugging this player to your computer. It would be best if you unplugged 1 or 2 of the USB devices connected for the time being. 2. You are plugging the player on your front USB port, and may need to plug it in the rear USB port to acquire ample power supply (front USB ports do not get as much power as the rear USB port -- sad but true) 3. You are using a laptop and may need to try another USB port on that computer. Purchasing a self-powered USB hub would be ideal as it gets its power supply directly from the wall electrical socket.

May 11, 2007 | SanDisk Sansa m240 MP3 Player

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