The NSM is a replacement memory card for Home and MVS systems. The original SNK memory card carried 2k of battery backed-up ram, enough to hold roughly 20 game saves. The NeoSaveMasta contains 2 separate 16k banks of storage and NO BATTERY.
You can save the level you’re on, like the final boss in a fighting game or last level in Metal Slug. You can save your season data from Baseball Stars or your current hole in Neo Turf Masters.
Note: Please make sure the pins on your memory card slot are not bent, damaged or missing before using ANY memory card.