Memory Expansion Adapter (250-4027) Features Faxback Doc. # 2017 The Zero K Memory Expansion Adapter is a special expansion board that enables you to increase the Tandy 3000 NL's memory to as much as 8 MB. The expansion board is divided into four empty memory banks. Each bank has two sockets for the installation of two matching SIMMs (single in-line memory modules). Each memory kit contains two matching SIMMs, so you will use one kit for each bank you need to fill. The number of banks you must fill depends on your memory configuration. Kits are available for 512 kilobytes of memory (two 256K SIMMs) and 2 MB of memory (two 1MB SIMMs). NOTE: The SIMMs use with the Tandy 3000 NL must have a maximum access time of no more than 150 nanoseconds. (CSS/jlc-03/27/94)