This 128K memory board contains the memory used by the Operator Station. The amount of memory required varies depending on the OS release.

The Basic Operator Station (rel 615 and 616) uses at least 256K of memory. For this configuration, two of these memory cards are required in slots 6 and 7.

The Enhanced Operator Station (rel 520 and 525) uses at least 512K of memory. For this configuration, four of these memory cards are required in slots 6,7,8 & 9.

This card has no jumpers, LEDs, or required adjustments.