Apple Macintosh Performa 5400 Series - Manual (Page 44)

Expanding memory
For information on increasing your computer’s memory, see Appendix E,
“Installing Additional Memory.”
Adding an Ethernet card or a second monitor
If you purchase an Ethernet card or another monitor for your computer, see
Appendix D, “If You Purchase Additional Equipment,” for more information.
Replacing internal storage devices
Your Macintosh comes with three internal storage devices—a floppy disk
drive, a hard disk drive (several capacities are available), and a CD-ROM
(compact disc read-only memory) drive. If you want to replace any of these
internal drives, see your Apple-authorized dealer.
43 Expanding Your Computer and Using Special Features