System board external port connectors

The following illustration identifies system-board connectors for external devices.

Keyboard/Mouse

USB

Serial A

Parallel

Serial B

Ethernet

Video

Note: For information on adding external SCSI devices to the server, see “SCSI cabling requirements” on page 91.

System board jumpers and switches

The following illustration identifies the jumpers and switches on the system board.

Switch block

Flash ROM page-swap jumper (J38)

System board jumper blocks

Any jumper blocks on the system board that are not shown in the illustration are reserved. For normal operation of the system, no jumpers should be installed on any of the jumper blocks. See “Recovering BIOS” on page 16 for information about the flash ROM page-swap jumper.

System board switch block

Installing options 57

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IBM XSERIES 220 manual System board external port connectors, System board jumpers and switches, System board jumper blocks