to install an external scsi connector on the rear of the computer, install an external scsi interface option. for a list of supported external scsi interface options for your computer, go to http://www.ibm.com/pc/.

    the external scsi interface option contains a scsi cable with a connector at one end and on the other end another connector or an expansion-slot cover with an embedded connector. complete the following steps to install and route the scsi cable in the computer:

    1. turn off the computer and all peripheral devices. disconnect all power cords; then, disconnect all external signal cables from the computer.

    2. remove the computer cover (see “removing the side cover” on page 37).

    3. remove the support bracket (see “removing and installing the support bracket” on page 38).

    4. open the front adapter-retention bracket and remove the rear adapter-retention bracket from the pci-x slots (see “installing an adapter” on page 40 for instructions). you might also have to remove longer adapters for access to the scsi connectors on the system board.

    5. connect the scsi signal cable end labeled “planar” to the connector for scsi channel b on the system board. see “system-board internal connectors” on page 36 for the location of the scsi channel b connector.

    6. route the scsi cable between the chassis and pci-x slot 5 to the back of the computer. make sure the cable does not block the flow of air to the microprocessors or hard disk drives.

    7. attach the external connector to the rear of the computer.

    1 if the external end of the scsi cable has a standard scsi connector, complete the following steps:

    a. remove the scsi-connector knockout from the rear of the computer.

    b. insert the external scsi connector on the scsi cable into the knockout opening and secure it with the attached screws.

    2 if the external end of the scsi cable has an expansion-slot cover with an embedded connector, complete the following steps:

    a. remove an expansion-slot cover from an available pci-x slot.

    b. insert the expansion-slot cover with embedded connector into the slot opening.

    8. replace any adapters you removed in step 4. close the front adapter-retention bracket and replace the rear adapter-retention bracket.

    9. replace the support bracket (see “removing and installing the support bracket” on page 38).

    10. replace the cover (see “replacing the side cover” on page 63).

    11. reconnect the external cables and power cords. turn on the attached devices, and turn on the computer.

    12. use the scsiselect program to configure scsi channel b (see “using the scsiselect utility program (some models)” on page 30).