The Vintage PC Toshiba THM91000AS-10 is a sought-after memory module set from 1989, made in Japan. This 1MB SIMM memory module set consists of four units, each with a total capacity of 4 MB. With a bus speed of 100 ns and featuring Fast Page memory technology, this IBM-compatible FPM RAM set from Toshiba is ideal for vintage computer enthusiasts looking to upgrade their computing experience with a touch of nostalgia. The 30-pin design and reliable brand make it a valuable addition to any retro PC collection.