Artifact Details Title TI-99/4 Memory Expansion Unit Catalog Number X1468.97 Type Physical object Description Allows additional memory to be added to base model of TI 99/4 microcomputer. Incl. 120VAC power cord; power switch; plug-in connector; memory (pass through) connector. Date 1979 Manufacturer Texas Instruments Incorporated (TI) Place Manufactured U.S. Identifying Numbers Model number PHP2200C Other number LTA3181 Printed next to serial number on bottom of object Serial number 67162 Dimensions overall: 3 in x 7 1/2 in x 10 in Category Memory: Lot Number X1468.97