Lenovo 4162 - Manual (Page 19)

Figure 5. Drive bay locations
1 Bay 1 - Optical drive bay (with an optical drive installed)
2 Bay 2 - Slim card reader drive bay
3 Bay 3 - Primary SATA hard disk drive bay (with a 3.5-inch SATA hard disk drive installed)
4 Bay 4 - Secondary SATA hard disk drive bay
Chapter 1 . Product overview 11