Vintage Indigo Data Systems 16K RAM Board, marked copyright 1981. Memory expansion/language card for compatible Apple II and II Plus computers. Includes the attached ribbon cable and motherboard socket connector shown. Requires correct installation in a compatible system; not a plug-in upgrade for modern computers. Used condition with surface spotting, discoloration and age-related wear visible on the board and contacts. Untested; operation and memory integrity are unknown. Return accepted if not meeting expectations. Includes one board with attached cable only; no computer, software or manuals.