Aaeon MB-668 Manual page 16

MB-668
COM4 RS-232/422/485 (CN20)
Pin Signal
1 DCDB
2 RXDB
3 TXDB
4 DTRB
5 GND
6 DSRB
7 RTSB
8 CTSB
9 RIB
USB Connector (CN6) and (CN26)
MB-668 is equipped with a dual port USB onboard connector.
It acquires the new generation of plug and play ( Hot Plugging )
feature, for both low speed and high speed devices. It could also
be expanded up to 127 connections through USB hub. CN26 can
be disabled in the BIOS system setup. Refer pin definitions as
follows:
USB Connector (CN6)
Pin Signal
1 Vcc
2 USBD1-
3 USBD1+
4 GND
USB Connector (CN26), Pin header
Pin Signal
1 Vcc
2 USBD1-
3 USBD1+
1 6 MB-668 Installation Guide
Pin Signal
10 BTXD+
11 BTXD-
12 BRXD+
13 BRXD-
14 GND
15 N/C
16 N/C
17 N/C
18 GND
Pin Signal
5 Vcc
6 USBD0-
7 USBD0+
8 GND
Pin Signal
4 GND
5 USBD0+
6 USBD0-
BC-599/596