Strange USB Front Wiring

[mycroft69]

Can anyone please assist with translating some wiring connectors? I bought an entry-level Chiefmax chassis with front USB 2.0 ports, but the connectors for the wires are labeled Port+, Port-, and two more have circles with a plus inside one and a negative inside the other. I'm having problems matching them up with standard motherboard diagrams.

mycroft69

 

[Bob Anderson]

You are going to need your specific motherboard's installation guide with a schematic drawing of all the parts and connectors.

-Bob

 

[Zepper]

The ones without the circle are for one port, the one with the circles are for the other port - you have sets of at least 4 wires for each of two ports. The +5V and Ground wires don't really matter which port you connect them to as they are both common to each other. But if they also have circles or no then group the circle connectors together on one port and the non-cirlcle wires together on the other.

.blh.

 

[mycroft69]

Thanks for responding, guys.

1. The motherboard is a Shuttle MK40VN, and I've been reviewing the manual, which is why I posted this message.

2. I neglected to give more specifics, which is that the wires for each of the 2 USB case front ports are already grouped. Each has a "Port +", "Port -", "(circle)+" and "(circle)-".

My problem is that each group structure in the board's manual is arranged thus: VREG_FP_USBPWR0, USB_FP_P-, USB_FP_P+, GROUND. What do "Port" connectors correspond with? What do the (circle) positive/negative connectors correspond to?

mycroft69

 

[Zepper]

And welcome to the AT forums. Sorry I missed your newbishness before.

Each 4 or 5-pin connector is for one port - doesn't matter which is which. Port+ and Port- are the signal pair, circle + and circle - are +5V power and ground respectively. The mobo pinout labels are self explanatory: vreg...pwr0 ie +5V for port-0; P- and p+ are the port signal pair and ground is ground. If you have to rearrange the contacts to line them up properly, this might help. Fairly standard, but not nearly 100% wiring color code: red =+5V, green=signal+, white=signal-, black=ground. Here is the way to shift contacts around in the connector shells if needed: http://www.frontx.com/head_con.html .

.bh.

 

[mycroft69]

Thanks for the response. Shortly after my previous reply, I decided to use altavista because there was something bothering me about all this, something basic I thought I was missing. I went to an electrician's website, and -- sure enough -- there was a little note reminding me that circles around pluses and minuses identify current source and ground.

Thanks for getting back to me on what should have been something given. Case now closed.

mycroft69