Power Cabling

The internal power cables are connected to the system board, SCSI backplane, storage devices, and diskette drive. The power cables vary in length and provide connector sizes to accommodate a variety of supported storage devices and a flexible storage configuration. Power cables are connected to the SCSI backplane to provide power to the 3 1/2-inch SCSI hard drives in the device trays.

Diskette Drive Data Cabling

The diskette drive data cable comes attached to the system board and to the

3 1/2-inch, 1.44-MB diskette drive (see the following figure). The cable has two connectors, one connected to the system board and one connected to the diskette drive.

SCSI Cabling

Your system ships with two SCSI cables and two SCSI controllers on the system board. The cables and controllers are:

a narrow three-connector SCSI cable and a SYM53C810AE controller on

Tthe PCI-A bus

a wide two-connector SCSI cable and a dual-channel SYM53C896 controller on the PCI-B bus.

The narrow SCSI cable connects to the SCSI CD ROM drive (K) and the SCSI controller through a 50-pin narrow SCSI connector (G) on the system board (see the following figure). Two additional connectors are available for optional SCSI devices (J). The CD ROM drive (K) is the last device on the cable and is terminated.

The wide SCSI cable connects to the SCSI backplane (A) and the SCSI wide controller through a 68-pin wide SCSI A connector (E) on the system board (see the following figure). Termination for up to six hard disk drives (C) is provided on the SCSI distribution panel (B). A second 68-pin SCSI connector (L) is available on the system board for connecting optional SCSI devices.

System Cabling A-3

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NEC MH4500 manual Power Cabling, Diskette Drive Data Cabling, Scsi Cabling, System Cabling A-3