NEC SP B-Series - Manual (Page 53)

Option Installation 3-13
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The standard IDE hard drive is set as the master device on the
primary IDE connector. The standard CD-ROM drive is the master
device on the secondary IDE connector.
T Installation hardware — check to be certain you have the screws
necessary to secure the drive in an accessible drive slot.
Device Cables
The cables used for the installation of optional storage devices include:
T diskette drive signal cable
T IDE signal cables
T system power cables.
The addition of a tape backup unit might require the replacement of the existing
diskette drive cable. The addition of an IDE device does not require the
replacement of the existing IDE cable. The existing IDE cables support two
devices on each cable.
Cable connector locations are shown in the following figure.
System Board Cable Connectors
A – Diskette Drive Cable Connector B – Primary IDE Cable Connector
C – Secondary IDE Cable Connector