IBM 86807RY Hardware Maintenance Manual - Page 116
Dual Serial Port, RS 485 Bus Port, Table 7. 10/100 Ethernet Connector Pin-Number, Assignments
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10BASE-T or 100 BASE-TX UTP Cable 1 23 Pins 6 RJ-45 Modular Plug Connector Table 7. 10/100 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 Dual Serial Port: The Advanced Remote Management Controller contains a dual serial port. The port has an external connector that can be used to attach to a Y-cable that is shipped with your server. The serial connectors on the Y-cable and the pin-number assignments are the same as for the system serial ports. This Y-cable can be used to attach to a modem that is dedicated to communication with the Advanced Remote Management Controller. You can obtain a listing of compatible modems and related information by accessing the following address: http://www.pc.ibm.com/us/compat/ on the World Wide Web. RS 485 Bus Port: The Advanced Remote Management Controller contains an RS 485 port. The port has an external connector that must be attached to an optional Y-cable that provides for chaining other compatible System Management Adapters for remote access. The following table shows the pin-number assignments for the connectors used by the RS 485 bus port. Table 8. RS 485 Bus Connector Pin-Number Assignments Pin Signal 1 Term power 2 + Input 3 − Input 4 + Output 5 − Output 6 Ground 108 Netfinity Server HMM