Lenovo 5393 - Manual (Page 21)

Figure 5 shows the locations of the drive bays in your computer.
1 Bay 1 - Optical drive bay (with an optical drive installed)
2 Bay 2 - Optical drive bay
3 Bay 3 - Card reader (available in some models)
4 Bay 4 - Secondary SATA hard disk drive bay (with a 3.5-inch SATA hard disk drive
installed in some models)
5 Bay 5 - Primary SATA hard disk drive bay (with a 3.5-inch SATA hard disk drive
installed)
Figure 5. Drive bay locations
Chapter 1. Product overview 13