IBM PS/2 65 SX Hardware Maintenance Reference page 19

IBM PS/2 Model 65 SX HMR
Option Compatibility
2.0 Option Compatibility
The &mod65. uses some adapters designed for Models 50, 60, 70, and 80
computers. For more information, see the parts section in the Hardware
Maintenance Service pamphlet for the model you are servicing.
Subtopics
2.1 Drive and Diskette Compatibility
2.2 Fixed Disk Drives
2.3 Terminators
2.0 - 1