The Model CL57 SX has no internal expansion slot to accept any existing
adapters for the IBM Personal System/2. However, a half-size
communication adapter in the communications cartridge II, which is
designed for IBM Personal System/2 computers that use Micro Channel
architecture, can be attached to the system expansion connector. The
communication adapters that the Model CL57 SX supports are:
¯ IBM 36/38 Workstation Emulation Adapter/A
¯ IBM Token Ring-Network Adapter/A.
Diskette Drive and Diskette
IBM PS/2 Model CL57 SX HMR
_ Copyright IBM Corp. 1991