AXIOMTEK IMB540, User Manual

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IMB540 User’s manual
Board and Pin Assignments 17
2.3.18 Power Input Connectors (ATX1 and CN18)
Steady and sufficient power can be supplied to all components on the motherboard by
connecting the power connector. Please make sure all components and devices are
properly installed before connecting the power connector.
An external power supply plug fits into ATX1 and CN18 in only one orientation. Properly
press down power supply plug until it completely and firmly fits into the connector. Loose
connection may cause system instability.
ATX1 CPU power input connector:
CN18 24-pin power input connector:
2.3.19 Internal USB 3.2 Gen1 (5Gbps) Connector (CN20 and
CN21)
The CN20 & CN21 is a 19-pin internal connector for installing various USB 3.2
Gen1(5Gbps) compliant peripherals.
Pin ATX1 Signal Pin ATX1 Signal
1 GND 5 +12V
2 GND 6 +12V
3 GND 7 +12V
4 GND 8 +12V
Pin CN19 Signal Pin CN19 Signal
1 3.3V 13 3.3V
2 3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 PWR OK 20 -5V
9 5VSB 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 3.3V
24 GND
Pin Signal Pin Signal
1 VBUS0
2 SSRX5- 19 VBUS1
3 SSRX5+ 18 SSRX6-
4 GND 17 SSRX6+
5 SSTX5- 16 GND
6 SSTX5+ 15 SSTX6-
7 GND 14 SSTX6+
8 USB10- 13 GND
9 USB10+ 12 USB11-
10 ID 11 USB11+
1
4
5
8
1
12
13 24