|"Mother board is a GeForce 6100m9"|
GEFORCE 6100-M9 SOCKET 939 (home support page)
(This site cannot make ftp addresses an active link you can click on to go there. Copy the entire ftp address into your internet browser's Address line box or similar (there is no space in it after 206100- ) , or go to the above home support page for the mboard, click on the link for Manual on the right side of the page, and click once on the manual link on the resulting Downloads page to view it.
NOTE that this site uses software that automatically shortens links (that have http:// addresses) that are longer than a certain length to save visual space in the posts - the shortened link has 3 dots at the end of the line and is a link to the actual full length link.
Sometimes that software makes mistakes and chops off the original long link in the wrong place - in that case clicking on shortened link - in this case for the Downloads page I previously provided - does not load the original longer link properly. )
Page 15 of pdf
USB header - it's the same situation as for many recent mboards. E.g. Recent and fairly recent Asus mboards have the same USB header, pin arrangement, pin numbering, and designated pin uses.
It's the most common situation for a USB header on a mboard these days.
All odd numbered pins on one side - 1, 3, 5, 7; no pin at position 9
KEY is usually = no pin there.
Some one piece double row wiring connectors for USB ports have a blocked pin hole at that location, so in that case, the connector can only go on the pins one way.
However, the wiring uses of the connector at each pin hole MUST be compatible with the USB header's wiring otherwise. In your case, both rows have the wiring in the same direction - the +5v wires must be beside each other at the positions for pins 1 and 2, etc. .
NOTE that it causes no harm if you connect the connections for Data - and Data + backwards, but if you get the connections for +5v and it's Ground backwards, you will probably FRY the circuits of whatever you plug into the mis-wired USB port, instantly, if the computer is running at the time !
All even numbered pins on the other side - 2, 4, 6, 8; pin 10 has no connection to the mboard
NC = No Connection, to the mboard USB circuits
In this case in your Biostar manual for your mboard ...
USB - a.k.a. Data -
USB + a.k.a. Data +
As I said above....
"The USB headers may have all odd numbered pins in one row, all even numbered pins in the other row, or be numbered in sequence in each row, e.g, 1 to 5, 6 to 9.
The list of uses for the pins in the manual is usually listed 1 to 9 in any case. For the first situation, heed only the odd numbered pin uses in order for the the one row, only the even numbered pin uses in order for the other row. "
Connect the wires for one USB port to pins 1, 3, 5, 7 in one row.
Connect the wires for another USB port to pins 2, 4, 6, 8 in the other row.
You don't need to connect the fifth wire for one USB port (or for a ground for the outer metal shell for both ports) from the case to the USB header - even if you did connect to pin 10 it isn't connected to anything (NC = No Connection) .
If you have three ground wires from the case, it doesn't matter which two of them you connect to pin 8 and pin 7.
If you have two grounds from the case and a wire for OC, do NOT connect that wire to pin 8 or pin 7.
If the case has individual wires, individual wiring connertors for each wire
- the characters printed on the connectors have a number indicating which of the two front USB ports it is for - e.g. 0, and 1, or 1, and 2
- or - there is no number but the wires for one USB port come from the same cable sheath, or the same bundle of wires, the wires for the other USB port come from the other one.
A generic case may have a label stuck to the inside of the case that tells you what each wire for the front USB ports is for.