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76 Appendix B: Technical Reference
VGA/USB connector
The VGA/USB connector is an M12 12-pin (male) connector that transmits and
receives both output video and transmits and receives USB signals. The output
video signal is a standard RGB analog video output used to send the operating
system's desktop to the connected independent display device. The video output
can be used to display the Windows desktop or an exclusive display (that is, a
full-screen display without a windowed border). However, when grabbing with
your Matrox Iris GT, a remote display (on your Matrox Iris GT's operating system
display or a computer on your network) is used to view the grab by default.
The table below summarizes the supported standard display resolutions:
Standard display resolution
1920 × 1200
1920 × 1080
1600 × 1200
1280 × 1024
1024 × 768
800 × 600
640 × 480
The pinout for the VGA/USB connector is as follows:
Pin number
Signal name
1
USB PWR
2
USB_DATA_P
3
USB_DATA_N
4
GND
5
RED_VID_OUT
6
BLUE_VID_OUT
11 3
2
10
4
1
5
9
12
6
8
7
Analog video
RGB
RGB
RGB
RGB
RGB
RGB
RGB
Description
5 V supplied from your Matrox Iris GT to the USB
peripherals.
USB data +.
USB data -.
Ground.
R component of the RGB video output signal.
B component of the RGB video output signal.
Maximum refresh rate
60 Hz
60 Hz
60 Hz
85 Hz
85 Hz
85 Hz
85 Hz
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