NEC NEAX Express, Руководство пользователя, Страница: 139 / 200

System Cabling A-3
Standard Configuration
Your system is cabled using a dual channel on-board IDE Controller and dual on-board
Adaptec AIC-7896 SCSI Controller.
The on-board IDE controller supports the standard internally mounted CD-ROM as its
first (master) device and an optional internally mounted IDE tape drive as its second
(slave) device.
The AIC-7896 contains one independent Ultra2 (LVD) wide and one Ultra wide SCSI
interface that share a single PCI bus master controller. As implemented on the system
board controller A attaches to an Ultra2 SCSI backplane that supports up to seven
Ultra-2 SCA drives. Controller B may 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.
Referring to the Figure below, a 68-pin wide SCSI interface cable (D) is connected to
the SCSI connector (E) in the lower middle of the system board. This cable connects to
the rear of the hard disk drive's SCSI backplane (C).
The IDE interface cable (J) is connected to the IDE connector (I) towards the right edge
of the system board. This cable connects to the rear of the internally mounted CD-ROM
drive (K).
When adding or removing IDE devices, consider the following:
Note:
Only one IDE cable is supplied with the system.
„
The system board supports a primary and secondary IDE channel connector. Each of
these supports two devices, for a total of four IDE devices.
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A first (master) device and a second (slave) device are supported on both the primary
and secondary IDE channel connector.
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The device configuration, master versus slave, is determined by jumpers on the
devices. Cable Sense (CS) device configuration is not supported.
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If only one device is on a channel connector it must be set as the master device.