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VIA VAB-950 User Manual
2.
External I/O Pin Descriptions and Functionality
The VIA VAB-950 has a wide selection of interfaces, and includes a selection of frequently-used ports as part of
the external I/O coastline.
2.1 HDMI® Port
The VIA VAB-950 is equipped with one HDMI port on the back panel which uses an HDMI port Type A
receptacle connector to connect High Definition video and digital audio using a single cable. The pinouts of the
HDMI port are shown below.
Table 1: HDMI port pinouts
2.2 USB 2.0 Port
The VIA VAB-950 is equipped with a USB 2.0 port on the back panel. The USB 2.0 port provides complete Plug
and Play and hot swap capabilities for external devices. The pinouts of the USB 2.0 port are shown below.
Table 2: USB 2.0 port pinouts
Figure 10: HDMI port diagram
Figure 11: USB 2.0 port diagram
Pin
Signal
Pin
Signal
1
D2+
11 GND
2
GND
12 CLK-
3
D2-
13 CEC
4
D1+
14 NC
5
GND
15 DDC_CLK
6
D1-
16 DDC_DATA
7
D0+
17 GND
8
GND
18 HDMI_5V
9
D0-
19 PLUG_DET
10 CLK+
Pin
Signal
1
VCC
2
USB data -
3
USB data+
4
GND
