Yamaha CRW4001t - Manual (Page 14)

Chapter 2 - Installing the Yamaha CRW4001t Drive
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4. Remove the front cover of a vacant half-height drive bay.
For details refer to the manual of your computer.
5. Slide the CRW4001t drive into the drive bay from the front.
At this time, be careful not to apply excessive force to the drive itself.
Finger-tighten the four fastening screws, and check that there is enough
room to connect the power supply cable, IDE interface connector, and
AUDIO cables.
6. Connect the IDE interface connector.
Connect the 40-pin IDE interface connector to the IDE interface located
on the rear panel of the CRW4001t drive.
Position the connector so that the colored line is at pin 1 (your lower right).