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Chapter 2: Switches and Connectors
USB3_4_1, USB5_6_1, USB7_8_1: USB2.0 Connector, Type A
Pin
USB3_4_1 Definition USB5_6_1 Definition USB7_8_1 Definition
1
+5V
2
USB2_D2-
3
USB2_D2+
4
GND
5
+5V
6
USB2_D3-
7
USB2_D3+
8
GND
SIM1, SIM2：SIM Card Socket
Pin
Definition
C1
UIM_PWR
C2
UIM_RESET
C3
UIM_CLK
C5
GND
COM1_1: RS232 / RS422 / RS485 Connector
Connector Type: 9-pin D-Sub
Pin
RS232 Definition
1
DCD1
2
RxD1
3
TxD1
4
DTR1
5
GND
6
DSR1
7
RTS1
8
CTS1
9
RI1
+5V
HUB_USB2_D0-
HUB_USB2_D0+
GND
+5V
HUB_USB2_D1-
HUB_USB2_D1+
GND
Pin
Definition
C6
UIM_VPP
C7
UIM_DATA
CD
NC
COM
GND
RS422 / 485 Full
Duplex Definition
TX1-
TX1+
RX1+
RX1-
RCO-3000 | User's Manual
+5V
HUB_USB2_D2-
HUB_USB2_D2+
GND
+5V
HUB_USB2_D3-
HUB_USB2_D3+
GND
RS485 Half Duplex
Definition
DATA1-
DATA1+
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