Acrosser AMB-IH61T3 (Mini-ITX) - Manual (Page 10)

[1] COM3-6 Headers（20*2 Pin 2.00 mm）
Location Header Pin Definition Pin Definition
1 COM3_DCD 2 COM3_RXD
3 COM3_TXD 4 COM3_DTR
5 GND 6 COM3_DSR
7 COM3_RTS 8 COM3_CTS
9 COM3_RI 10 GND
11 COM4_DCD 12 COM4_RXD
13 COM4_TXD 14 COM4_DTR
15 GND 16 COM4_DSR
17 COM4_RTS 18 COM4_CTS
19 COM4_RI 20
21 COM5_DCD 22 COM5_RXD
23 COM5_TXD 24 COM5_DTR
25 GND 26 COM5_DSR
27 COM5_RTS 28 COM5_CTS
29 COM5_RI 30 GND
31 COM6_DCD 32 COM6_RXD
33 COM6_TXD 34 COM6_DTR
35 GND 36 COM6_DSR
37 COM6_RTS 38 COM6_CTS
J_COM3-6
39 COM6_RI 40 GND
[2] COM2 Header (5*2 Pin 2.54mm)
Location Header Pin Definition Pin Definition
1 DCD 2 DSR
3 RXD 4 RTS
5 TXD 6 CTS
7 DTR 8 RI
J_COM2
9 GND
10