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System-board external port connectors
The following illustration shows the location of the input/output external port
connectors on the system board.
Serial (J10)
Keyboard (J33)
Mouse (J1)
Ethernet (J56)
Note: ISMP ports (ISMP A and B) are used for the RS-485 interconnect network
44
xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide
communications. These ports become inactive if you install an optional IBM
Remote Supervisor Adapter in this server. If you install an optional IBM
Remote Supervisor Adapter in this server, you must use the RJ-45 connector
on the adapter for interconnect network communications.
Video (J22)
USB 3 and 4 (J21)
USB 1 and 2 (J18)
ISMP A and B (J2)
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