Internal Usb 3.1 Gen1 Connector (Cn21); Sim Card Slots (Cn19) (Optional) - AXIOMTEK IMB523 User Manual

IMB523 / 524 / 525 LGA1151 ATX Motherboard
2.5.19

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

Note
2.5.20

SIM Card Slots (CN19) (Optional)

The mothterboard includes one SIM slot on the bottom side of the system for inserting a
SIM card. It is mainly used in 3G/4G wireless network applications.
Pin Signal
1 PWR
2 RST
3 CLK
4 NC
5 GND
6 VPP
7 I/O
8 NC
24
Pin Signal
19 VBUS1
18 SSRX6-
17 SSRX6+
16 GND
15 SSTX6-
14 SSTX6+
13 GND
12 USB11-
11 USB11+
CN21 supports USB3.1 GEN 1 when the chipset is customized into
®
Intel Q370 & C246.
Board and Pin Assignments