B&B Electronics EIR508-T - Manual - Manual (Page 15)

Manual Documentation Number: EIR508-2xx-T 1713m 15
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
Ports
 RJ-45 ports
There are 5 (or 8) 10/100Mbps auto-sensing ports for 10Base-T or
100Base-TX device connection. The ports are auto-sensing and auto
MDI/MDIX.
 RJ-45 Pin Assignments
Pin Number Assignment
1 Tx+
2 Tx-
3 Rx+
6 Rx-
All copper ports on this switch support automatic MDI/MDI-X operation.
Straight-through cables can be used for all network connections. In
straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are
connected straight through to pins 1, 2, 3 and 6 at the other end of the cable.
The table below shows the 10BASE-T/100BASE-TX MDI and MDI-X port
pin outs.
Pin MDI-X Signal Name MDI Signal Name
1 Receive Data plus (RD+) Transmit Data plus (TD+)
2 Receive Data minus (RD-) Transmit Data minus (TD-)
3 Transmit Data plus (TD+) Receive Data plus (RD+)
6 Transmit Data minus (TD-) Receive Data minus (RD-)