Supermicro A2SAP-L1 User Manual page 33

COM Headers
The JCOM1 header provides two RS232/422/485 COM connections. Refer to the table below
for pin definitions. Refer to pins 1 - 10 for COM1 and pins 11 - 20 for COM2.
Pin# Definition
DCD
1 or RS-485/422_COM1_TX- (Full Duplex)
or RS-485_COM1_Data- (Half Duplex)
RXD
3 or RS-485/422_COM1_TX+ (Full Duplex)
or RS-485_COM1_Data+ (Half Duplex)
5 TXD or RS-485/422_COM1_RX+ (Full Duplex)
7 DTR or RS-485/422_COM1_RX- (Full Duplex)
9 GND
DCD
11 or RS-485/422_COM2_TX- (Full Duplex)
or RS-485_COM2_Data- (Half Duplex)
RXD
13 or RS-485/422_COM2_TX+ (Full Duplex)
or RS-485_COM2_Data+ (Half Duplex)
15 TXD or RS-485/422_COM2_RX+ (Full Duplex)
17 DTR or RS-485/422_COM2_RX- (Full Duplex)
19 GND
SATA Ports
The A2SAP-L1 has one SATA 3.0 port (I-SATA1) that is supported by the Intel Atom SoC.
JPWR1
JUSB1
JUSB2
SRW2
JMD1
LED1
JF1
Serial COM Ports
Pin Definition
2
JLAN1LED1
JHDMI1
JLPC
SRW1
JMP1
JCOM1: COM1/COM2 J3: AUDIO FP
A2SAP-L1
REV:1.00
DESIGNED IN USA
1
33
Chapter 2: Installation
Pin# Definition
DSR
2
RTS
4
6 CTS
8 RI_N
10 N/A
DSR
12
RTS
14
16 CTS
18 RI_N
20 N/A
1. JCOM1
JLAN1
2. I-SATA1
USB 0/1
BT1
JLCDPWR1