HP COMPAQ MS610-FA 4GB MEMORY KIT,  4 x 20-00FSA-08 1GB PC133 ECC 200 PIN DIMMS FOR HP/COMPAQ ALPHASERVER ES40, GS80, GS160 OR GS320 SERVERS.  FULLY TESTED &  FULLY FUNCTIONAL,  RAN 24 HOURS VMS TEST WITH NO ERRORS AND IS FULLY COMPATIBLE WITH ANY ASSOCIATED ALPHASERVER.  30 DAY WORKING WARRANTY, ITEMS WILL BE PROFESSIONALLY PACKAGED, TO ENSURE SAFE SHIPMENT.