Yamaha CRW2100E Owner's Manual page 20

Setup Procedures
Choosing the Connecting Method
4 First make sure how existing IDE devices are connected to your
computer, and then determine how to connect the CRW2100E drive in
conjunction with those devices.
11
As an additional drive (set as secondary slave)
If the casing of your computer has a spare 5.25-inch drive
bay available, such as with many tower-type designs, you
can install the CRW2100E drive in addition to the
computer' s existing CD-ROM drive.
As a replacement drive (set as secondary master)
If the casing of your computer does not have a spare 5.25-
inch drive bay available, such as with many desktop-type
designs, you can replace the computer' s existing CD-ROM
drive with the CRW2100E drive.
CRW2100E CRW2100E CR W2100E
n You cannot replace the computer' s existing CD-ROM drive
with the CRW2100E drive using the existing cable if the drive
is a SCSI type. In this case, use an IDE cable to connect the
CRW2100E drive.
CRW2100E
CD-ROM drive