Installation Manual

INS_RLXE4GE24MODMS_REV– 1 Jul 2016 PAGE 16

INSTALLATION AND OPERATION MANUAL RLXE4GE24MODMS

TECH SUPPORT: 1.888.678.9427

The RLXE4GE24MODMS Series 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 10BASE-T/

100BASE-TX MDI and MDI-X port pin outs.

10/100 Base-T MDI/MDI-X pins assignment

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 pins assignment

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-

Note: “+” and “-” signs represent the polarity of the wires that make up each wire pair.

SFP

The Switch has fiber optical ports with SFP connectors. The fiber optical ports are in 100/1000Base-X

multi-mode (0 to 550M, 850 nm with 50/125 μm, 62.5/125 μm fiber) , single-mode and 10 Gbps SFP+

Module with LC connector. Please remember that the TX port of Switch A should be connected to the

RX port of Switch B.

Switch A Fiber Cord Switch B