INS_CNGE2+2SMS_REV– 02/19/13 PAGE 12
INSTALLATION AND OPERATION MANUAL CNGE2+2SMS[POE][HO]
TECH SUPPORT: 1.888.678.9427
1000 Base-T RJ-45 Pin Assignments
Pin Number Assignment
1 BI_DA+
2 BI_DA-
3 BI_DB+
4 BI_DC+
5 BI_DC-
6 BI_DB-
7 BI_DD+
8 BI_DD-
The CNGE2+2SMS switches support auto MDI/MDI-X operation. You can use a straight-through
cable to connect PC to switch. The following table below shows the 10/100BASE-T(X) MDI and
MDI-X port pin-outs:
10/100 Base-T MDI/MDI-X pin assignments
Pin Number MDI port MDI-X port
1 TD+ (transmit) RD+ (receive)
2 TD- (transmit) RD- (receive)
3 RD+ (receive) TD+ (transmit)
4 Not used Not used
5 Not used Not used
6 RD- (receive) TD- (transmit)
7 Not used Not used
8 Not used Not used
1000 Base-T MDI/MDI-X pin assignments
Pin Number MDI port MDI-X port
1 BI_DA+ BI_DB+
2 BI_DA- BI_DB-
3 BI_DB+ BI_DA+
4 BI_DC+ BI_DD+
5 BI_DC- BI_DD-
6 BI_DB- BI_DA-
7 BI_DD+ BI_DC+
8 BI_DD- BI_DC-
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