Chapter 4. Installing Options 33Internal drives are devices that your computer uses to read and store data. You canadd or replace drives to your computer to increase storage capacity and to enableyour computer to read other types of media such as CD-ROM.Internal drives are installed in bays. Within this book, the bays are referred to as bay 1,bay 2, and so on.When you install an internal drive, it is important to note what type and size of drivethat you can install in each bay. Also, it is important to correctly connect the internaldrive cables to the installed drive.Drive specifications: Your computer might come with the following IBM-installeddrives:• A 3.5-inch diskette drive in bay 1• A CD drive or DVD drive in bay 2• A 3.5-inch hard disk drive in bay 3Bays that do not have drives installed have a static shield and bay panel installed.The following illustration shows the locations of the drive bays.The following table describes some of the drives that you can install in each bay andtheir height requirements.Notes:1. Drives that are greater than 41.3 mm (1.6 in.) high cannot be installed.2. Install removable media (tape or CD) drives in the accessible bay: bay 2.Installing a drive: To install a CD drive or DVD drive in bay 2, follow these steps.1. Remove the cover (see “Removing the cover” on page 26).1Bay 1 - Max Height: 25.8 mm (1.0 in.) 3.5-inch diskette drive (preinstalled in somemodels)2Bay 2 - Max Height: 41.3 mm (1.6 in.) CD-ROM drive (standard in some models)3Bay 3 - Max Height: 25.8 mm (1.0 in.) 3.5-inch hard disk drive (preinstalled)