Internal Usb 3.1 Gen1 Connector (Cn21); Vga And Dvi-D Connector (Cn3) - AXIOMTEK IMB520R User Manual

2.5.20

Internal USB 3.1 Gen1 Connector (CN21)

The CN21 is a 19-pin internal connector for installing versatile USB 3.1 compliant
peripherals.
Pin Signal
1 VBUS0
2 SSRX5-
3 SSRX5+
4 GND
5 SSTX5-
6 SSTX5+
7 GND
8 USB10-
9 USB10+
10 ID
2.5.21

VGA and DVI-D Connector (CN3)

CN3 is a double-deck connector comprising an lower connector for DVI-D port and a
upper connector for VGA port.
The high rise DVI-D connector provides transmission of fast and high quality video
signals between a source device (graphic card) and a display device (monitor).
Pin Signal
1 TX2-
3 Ground
5 NC
7 DVI_SPD DATA
9 TX1-
11 Ground
13 NC
15 Ground
17 TX0-
19 Ground
21 NC
23 TXC+
The 15-pin D-Sub connector is commonly used for VGA display.
Pin Signal
1 Red
3 Blue
5 GND
7 GND
9 VCC
11 NC
13 Horizontal Sync
15 DDC CLK
Board and Pin Assignments
IMB520R / 521R LGA1151 ATX Motherboard
Pin Signal
19 VBUS1
18 SSRX6-
17 SSRX6+
16 GND
15 SSTX6-
14 SSTX6+
13 GND
12 USB11-
11 USB11+
Pin Signal
2 TX2+
4 NC
6 DVI_SPD_CLK
8 NC
10 TX1+
12 NC
14 VGAVCC
16 HPDETECT
18 TX0+
20 NC
22 Ground
24 TXC-
Pin Signal
2 Green
4 NC
6 GND
8 GND
10 GND
12 DDC DATA
14 Vertical Sync
21