Swapped my ma785r board to a new case and need the pin layout for power switch and reset switch

Hi Greeneyedbj,

What kind of I/O connectors are you looking for *********** board sir?



The image above has the following for your I/O connectors.
1. Three usb headers up to 6 additional devices, most casing can support 2-4 pins. 2. Front Audio Connector. 3. Front Panel Connector. Power Sw, Reset Sw, Powed Led, HDD Led

Branded casing has the following I/O connectors.
1. Esata 2. Firewire (Dont use the USB headers, firewire use a different pin-layout) 3. Chassis Intrusion Alarm Header.

Hopefully this information helps.
You can ask for more help.
Thank you for using FixYa.

ok i dont hqave it but as i buld a lot of used pcs and new ones its usaly goes like this there is a 9th pin and a tenth one missing next to and in a straght line down the way nest to where the missing pin is is the on of under it is the reset pins next to the reset one is the hdd led and that leaves 1 set of 2 pins left if you want e mail me and ill draw a diagram for you hope this helps

Hi,
On the Dell board, the
CORRECT pinout for J8H1 is as follows:

1-3: HD LED (#1 is +)
2-4: PWR LED (#2 is +)
5-7: PWR ON/OFF
6-8: RESET
5,16: +5V
10,11,14,15: not connected
12,13: GND


Regards.

if you are talking about connecting the front chassis connectors to your motherboard then you need to find out the exact model of the MB... im assuming its Intel since its a Dell.

the link below should get you started

http://www.intel.com/support/product.htm

Did you try bypassing the switch?

To do so:

1. Remove the case
2. Follow the wire from the power switch to the motherboard
3. Remove the wire from the 2 pins
4. Use a screw driver and touch both pins at the same time, creating a connection

That would be the equivalent of switching the computer on, if it powers on then you know the switch is bad and just need to replace it. If it does not turn on I would be 99% sure it is the motherboard as you already swapped the power supply.

Pin arrangment is Industry Standard Architecture.....

pwr led pwr sw N/C
X X X X O

X X X X O

hdd rst N/C

translated this is top row left to right ...... power led, power switch no connection

Bottom row is left to right........ hard drive, reset, no connection

Note: not all computer cases have a reset button, also the connectors for power led and hard drive produce a light, if the light does not show, power off the pc swithc the cable rooun 180deg on the connector pins and reconnect.

[10][ 9] Pin 1 = +HDD pin 3 = -HDD LED
[ 8][ 7] Pin 2 = + POWER pin 4 = - power LED (SPD)
[ 6][ 5] Pins 5 & 7 = reset
[ 4][ 3] Pins 6 & 8 = Power switch
[ 2][ 1]


Hope you find this Useful

Dave

Hi Paul,
see page 8 number 15 for location. Than see page 19, System Panel Header in your manual.
The basic wire color's for positive are red, blue, green & can also be light blue, light green, light red.
Negative wires are usually white or black. Case wire colors do vary from case to case.
To see pin one shown on page 19, (positive + for hard drive led = HDLED+). Bottom row farthest pin to the left of set. Pin two is above pin one. Pin two is, PLED+ (known as power led). Pin 3 is to the right of pin one & is HDLED- (Hard drive led, negative). Pin 4 is above pin 3 & is also PLED-, (Negative for power led). ECT!
If your new case has an internal speaker (Used for P.O.S.T, power on self test). This would connect to, Chassis Speaker Header located on page 8, number 16. Again, normally only two wires are used across the 4-pin connector. (One at each end of the connector).

To see ASRock's main site for the 775VM800 motherboard click this link:
http://www.asrock.com/mb/overview.asp?Model=775VM800&s=

Good luck Paul!
Run into a snag, just post the issue here.

Mike

Goto page 10 in your user manual. There look for. Connect the case switches and indicator LEDs to the SW1. (Location).
There is mother board layout decription for how to connect the case, 2-pin wires case connectors ( Page 12 shows pin numbers & which is plus + & negative - pins.). You'll nee the manual to help you. Download it from ECS at: http://www.ecs.com.tw/ECSWebSite/Products/ProductsDetail.aspx?detailid=579&DetailName=Manual&MenuID=48&LanID=0

Good luck!

Mike

whew..that's not as simple as it looks. You'll need a pin out configuration guide, if one exists, or you'll need to make one. The power interface from front panel, is usually unique to each Dell, so its' not likely to swap over.

got backup for that Dell?