Front Case USB Connection Problem???? HELP!

[RaymondY]

I am currently using a Tyan Tiger MP (S2460) motherboard with an Chieftec Server Case (Similar to Antec SX1030X). Have hooked up the front USB connector to my motherboards. However I did notice that the wiring from the front panel on had 9 individual connectors whereas the motherboard header has 10 pins. Connected everything up and plugged an Sandisk CF card reader in and (with machine off) it works!!! However when I unplug the USB device and try to plug it in again my machine shuts down immediately. My thinking is that I have having a grounding problem.

ANy ideas???

HELP!!

 

[corkyg]

I just went through that saga, and finally got both front USB ports working properly. The 9 individual connectors are fairly standard. The 10 pin block is fairly standard. There is a pattern.

1. As you look at the 10-pin block, realize that the top row is one port and bottom row is the other.

2. Write down the connector labels on the 9 USB leads. That depends on your case manufacturer. But, anything 1ith "1" is top row, and anything with "2" is bottom row.

3. The general pattern after that is Voltage, data -, data +, and GND.

4. The 5th pin on the top row can be connected to "SHIELD" or left open.

This is a message sent to me by my case maker's tech support:

Motherboard Layout: USB+5V LDM1 LDP1 GND NC (No Connection)

Case Pins: VCC1 Data-1 Data+1 GND1

Motherboard Layout: USB+5V LDM2 LDP2 GND

Case Pins: VCC2 Data-2 Data+2 GND2

 

[RaymondY]

Both front USB ports work after I hooked them up. However when I try plugging in a USB device will my rig is running it just shuts down. When I plug the usb device in while my machine is shut down then I turn it on, the device works perfectly.

Any ideas?

 

[corkyg]

What you are saying is you can't hot plug a USB device without crashing the computer. This could be that either the voltage connections or the grounds are crossed - ie., 1 on 2 or vice versa. Do you have a 9th connector from the case? If so, try it in the top row NC pin. Also, does your BIOS have a Hi-Med-Lo USB voltage setting? Default is usually Med.

 

[MrCraphead]

I once put together a computer when the front USB connectors were in all separate wires. After much trial and error, i was finally able to put it in. I wish i had Corky's advice then. I found it helpful to find a connector that was all joined together in one block instead of separate wires, and get the wire sequence from there. gl.....