The following illustration shows the locations of the drive bays.The following list describes some of the drives that you can install in each bay andtheir height requirements:1 Bay 1 - Maximum height: 43.0 mm (1.7 in.) CD drive or DVD drive (preinstalled insome models)5.25-inch hard disk drive2 Bay 2 - Maximum height: 43.0 mm (1.7 in.) 5.25-inch hard disk drive3.5-inch hard disk drive (requires amounting bracket)CD driveDVD drive3 Bay 3 - Maximum height: 25.8 mm (1.0 in.) 3.5-inch hard disk drive (preinstalled)4 Bay 4 - Maximum height: 25.8 mm (1.0 in.) 3.5-inch diskette drive (preinstalled)Notes:1. Drives that are greater than 43.0 mm (1.7 in.) high cannot be installed.2. Install removable media (tape or CD) drives in the accessible bay (bay 1 or 2).Installing a driveTo install an internal drive, follow these steps:1. Remove the cover. See “Removing the cover” on page 9.2. If your computer has a CD drive or DVD drive, you might need to remove thesignal and power cables from the drive.3. If the drive you are installing is a removable-media drive, remove the baypanel from the front bezel.Chapter 1. Types 8149, 8177, and 8178 15