Standard Configuration - NEC EXPRESS5800/120Ed User Manual

Standard Configuration

Your system is cabled using a single channel on-board IDE Controller and dual channel
on-board Adaptec 7899 SCSI Controller.
The on-board IDE controller supports the standard internally mounted CD-ROM as its
master device.
The AIC 7899 contains two independent SCSI channels that share a single PCI bus
master interface. Each channel is capable of operations using either 8- or 16-bit SCSI
providing 160 MB/s (Ultra-160/M) or 40 MB/s (Wide Ultra) throughput. Channel A
attaches directly to a maximum of five 160/M hard disk drives. Controller B can be
used to support SCSI devices in the removable media bays.
A 3.5-inch diskette drive is also installed in all systems and interfaces separately to the
system board.
Figure A-1 illustrates the standard system configuration. Referring to Figure A-1, a 68-
pin Ultra-160/M SCSI interface cable (K) is connected to the SCSI connector (J) on the
right edge of the system board. This cable connects to the hard disk drives (N) located
in the hard drive bay (L).
The IDE interface cable (E) is connected to the IDE connector (D) towards the middle
right edge of the system board. This cable connects to the rear of the internally mounted
CD-ROM drive (F).
Optional internally mounted SCSI removable media devices (I) may be connected to the
SCSI controller connector (G).
System Cabling A-3