IBM 847671U Hardware Maintenance Manual - Page 108

Types of cables, A flat SCSI

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Types of cables: The server uses cables to connect IDE and SCSI drives to the power supply, riser card, and system board. The diskette drive is also powered through a cable attached to the riser card. Each cable connector is designed to fit a corresponding drive connector. The following cables are provided: Four-wire power cables connect most drives to the power supply. At the ends of these cables are plastic connectors that attach to different drives; these connectors vary in size. Also, some power cables attach to the riser card. Flat signal cables, sometimes called ribbon cables, connect IDE drives to the riser card. There are two sizes of signal cables that come with the server. - The wider signal cable attaches to the primary IDE connector on the back of the riser card. - The narrower signal cable attaches to the diskette drive and to the diskette drive connector on the back of the riser card. A flat SCSI signal cable for connecting devices to the SCSI adapter. Since the server is equipped with an UltraSCSI adapter, it has a ribbon cable that is connected to the internal SCSI hard disk drive. One end of this cable is connected to the 68-pin, internal SCSI connector on the SCSI adapter. The other end of the SCSI cable has a terminator. This cable provides four connectors for attaching other internal SCSI devices. For more information about SCSI devices, see "SCSI drives" on page 104. Note To locate connectors on the system board, see "System board illustration" on page 142. 100 Netfinity Server HMM

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Types of cables:
The server uses cables to connect
IDE and SCSI drives to the power supply, riser card, and
system board.
The diskette drive is also powered through
a cable attached to the riser card.
Each cable connector is
designed to fit a corresponding drive connector.
The
following cables are provided:
±
Four-wire
power cables
connect most drives to the
power supply.
At the ends of these cables are plastic
connectors that attach to different drives; these
connectors vary in size.
Also, some power cables
attach to the riser card.
±
Flat
signal cables
, sometimes called
ribbon cables
,
connect IDE drives to the riser card.
There are two
sizes of signal cables that come with the server.
–
The wider signal cable attaches to the primary
IDE connector on the back of the riser card.
–
The narrower signal cable attaches to the
diskette drive and to the diskette drive connector
on the back of the riser card.
±
A flat SCSI
signal cable
for connecting devices to the
SCSI adapter.
Since the server is equipped with an UltraSCSI adapter, it
has a ribbon cable that is connected to the internal SCSI
hard disk drive.
One end of this cable is connected to the
68-pin, internal SCSI connector on the SCSI adapter.
The
other end of the SCSI cable has a terminator.
This cable
provides four connectors for attaching other internal SCSI
devices.
For more information about SCSI devices, see “SCSI
drives” on page
104.
Note
To locate connectors on the system board, see
“System board illustration” on page
142.
100
Netfinity Server HMM