IBM Personal System/2 CL57 SX Hardware Maintenance Reference page 51

Notes:
1. The Model CL57 SX has two slots that hold any of three different
capacities of the IC DRAM card in any combination:
2. When installing the IC DRAM card, insert the IC DRAM card, with the
IBM logo facing up and the arrow mark first, into either slot 1 or 2.
IBM PS/2 Model CL57 SX HMR
1130 IC DRAM Card
2MB, 4MB, and 8MB.
_ Copyright IBM Corp. 1991
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