Used on a select few internal VGA breakout connectors. Passes through both video and DDC connections. There is only one ground, but that shouldn't matter with the short cable runs involved. 

{{:av:conn_idc10m.gif|}}
(at the device)

{{:av:conn_idc10f.gif|}}
(at the cable)

There are two variants used:

VGA-10A:
^Pin^Function^
|1|Red|
|2|ID0|
|3|Green|
|4|ID1|
|5|Blue|
|6|HSYNC|
|7|ID2|
|8|VSYNC|
|9|GND|
|10|ID3|


VGA-10B:
^Pin^Function^
|1|GND|
|2|ID3|
|3|ID2|
|4|VSYNC|
|5|Blue|
|6|HSYNC|
|7|Green|
|8|ID1|
|9|Red|
|10|ID0|