IBM 86605SU Maintenance Manual - Page 175
Ethernet Port, controller, Table 6. Ethernet Connector Pin-Number, Assignments
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Ethernet Port: The system board in your Netfinity 5500 contains an Ethernet controller. The controller has an external RJ-45 connector on the rear of the server that is used with a category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The connector enables an Ethernet network to attach to the internal transceiver in your server. Note The 100BASE-TX Fast Ethernet standard requires that the cabling in the network is Category 5 or higher. See "Configuring the Ethernet Controller" on page 55 for additional information about the Ethernet controller. Table 6 shows the pin-number assignments for the RJ-45 connector. These assignments apply to both 10BASE-T and 100BASE-TX devices. 10BASE-T or 100 BASE-TX UTP Cable 1 23 Pins 6 RJ-45 Modular Plug Connector Table 6. Ethernet Connector Pin-Number Assignments Pin Signal 1 Transmit data+ 2 Transmit data− 3 Receive data+ 4 Reserved Pin Signal 5 Reserved 6 Receive data− 7 Reserved 8 Reserved Note The wrap plug must have pin 1 connected to pin 3 and pin 2 connected to pin 6. 170 Netfinity Server HMM