DEC DIGITAL MS690-BA 32MB MEMORY MODULE FOR DEC MICROVAX 4000 MODEL 400, 500, 500A, 600, 600A, 700, 700A, 705 & 705A. NEW IN ORIGINAL FACTORY BOX, STILL FACTORY SEALED IN STATIC BAG, DEC PART# L4004-BA. 30 DAY WORKING WARRANTY, ITEM WILL SHIPPED INSIDE OF ANOTHER BOX, TO PROTECT FACTORY BOX & SHIP SAFELY.