What In the...

larry89

Senior member
Feb 8, 2005
639
0
0
:confused:

Well my Case came with 2 4 pin + gnd connectors and I dont know wtf to do.

My mobo layout for usb ports as follows

Key Ground +data -data VCC
N.C. Ground +data -data VCC

how the hell would i connect my 4 pin + gnd to it?

BTW this layout on the mobo is from the DFI NF-4 ULTRA-D

My 4 pin + gnd layout is


GND + - VCC


then the single ping nd is just separated...
 

VirtualLarry

No Lifer
Aug 25, 2001
56,587
10,227
126
Standard USB signalling is four wires, +5V (vcc), GND (gnd), and both a + and - data signal (differential signalling, I believe). The additional ground is a shield/chassis gnd. If your mobo doesn't have a chassis ground connection for the USB leads, leave it unconnected, or run a wire from that pin, to a screw on the case somewhere, and screw it down, forming a ground connection. Some mobos DO use a fifth pin on their USB headers, but do NOT use it for chassis ground - beware! Some use it for mechanical keying, N.C. (not connected), or O.C. (overcurrent). In those cases, do not connect a chassis ground lead to the fifth pin.