Hi Jim.  I can tell you how that setup goes:

Sorry, I read your description and went crosseyed - I'll just tell you how I
set mine up.

There are a couple of different layouts for USB pins - I think you have the
type that I'm familiar with, which goes as follows:

Looking at the mobo with the USB pins on the end nearest you and the CPU
furthest away, you're looking at two rows of pins.  The row nearest you has
4 pins, the upper row has 5, with the extra pin to the right.

The 'hot' pins are the two on your left, ie the leftmost of each of the two
rows.

The VCC end of each plug is the 'hot' lead.

The fourth pin FROM the left, in each row, takes the separated ground plugs,
I don't think it matters which one goes in which row.

Damned if I know what the extra 5th pin in the upper row does - it's marked
in the manual as 'USB' 'Over' 'Current'.  Someone here might know.

This setup is common on Gigabyte 7VKML and 7VKMLS mobos.  But some versions
have a different layout - the top row has one pin at the left, then a gap,
then three pins.

The lower row, nearest you, has the three pins to the left, then a gap, then
a single pin - in other words, the reverse of the upper row.

In each group of three pins, the 'hot' pin is the outermost, the separate
one the ground.

If you can't understand my description, mail me and I'll send you a coupla
photos ffom the manual.


Ian Porter
Computer Guys Inc.
Arrowtown
New Zealand
[log in to unmask]

----- Original Message -----
From: "James Maki" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, December 20, 2002 9:42 AM
Subject: [PCBUILD] USB Motherboard Connector


> I am trying to connect the second USB connector on my motherboard with the
> USB ports on the front of a new case. I am not sure of the correct pin
> connections because the mb manual and case connectors are labeled
> differently.
>
> motherboard connector (2 rows of 4/5 pins)
>         missing Ground
>         SBD3-       SBD3+
>         SVCC1           SVCC1
>         SBD2-           SBD2+
>         SGND1           SGND1
>
> case USB cables (two 4 pin connectors with separate 5th pin for ground):
>         VCC             VCC     (Red)
>         USB2-           USB1-   (White)
>         USB2+           USB1+   (Green)
>         GND             GND     (Black)
>
>         gnd             gnd     (Black)
>
> Comparing the two, it seems that the motherboard has both negative
> connections on one side and both positive connections on the other. The
case
> cables seem to have a positive and negative on each connection.
>
> This is how I think they should be connected:
>
>         missing Ground  black --
>                                         extra 5th pin ground
>                                         from case cable (either connector)
>         SBD3-       SBD3+               white (1st connector)   green (2nd
connector)
>         SVCC1           SVCC1           red (1st connector)     red (2nd
connector)
>         SBD2-           SBD2+           white (2nd connector)   green (1st
connector)
>         SGND1           SGND1           black (1st connector)   black (2nd
connector)
>
> I would like another pair of eyes to look at my interpretation of the
> connections. It seems strange to cross the pins between the two
connectors,
> but that was the only way I could make sense of the two sets of
information.
>
> Thanks for you input,
>
> Jim
> [log in to unmask]
>
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