Asus AAEON BIO-ST02-C4M1, User Manual, Page: 23 / 36

Chapter 2 – Hardware Information 12
BIO Daug
hter
Bo
ard
BIO
-S
T0
2-
C4
M1
Pin Pin Name Signal Type Signal level
1 +5VSB PWR +5V
2 USB_D- DIFF
3 USB_D+ DIFF
4 GND GND
2.3.6 COM Port 4 (D-SUB 9) (CN7)
Pin Pin Name Signal Type Signal level
1 DCD IN
2 RX IN
3 TX OUT ± 9V
4 DTR OUT ± 9V
5 GND GND
6 DSR IN
7 RTS OUT ± 9V
8 CTS IN
9 RI IN
2.3.7 COM Port 3 (D-SUB 9) (CN9)
1 5
6 9
1 5
6 9