Advantech SPC-57 - Manual (Page 50)

50
Pin Number Pin function Ps.
1 UART1_RDCD
2 UART1_RRXD
3 UART1_RTXD
4 UART1_RDTR
5 GND
6 UART1_RDSR
7 UART1_RRTS
8 UART1_RCTS
9 UART1_RRI
10 IO_VCC3P3
11 C950_485_RTXP
12 C950_485_RTXN
13 GND
14 GND
15 SPK_OUTRP
16 SPK_OUTLP
17 USB_VCC5
18 GND
19 SA_BUSB_DPR
20 SA_BUSB_DNR
CN 8 : Multi-function I/O header (Il)