4GB DDR3 PC3-8500 1066MHz UDIMM Desktop MemoryDESCRIPTION 4GB DDR3 PC3 8500 1066MHz Non ECC UDIMM Desktop Memory RAM Memory 4GB PC3 8500 1066MHz DDR3 240 Pin Non ECC CL7 1. 5V UDIMM Capacity 4GB Type PC3 8500 Memory Speed 1066MHz (PC3 8500) Technology DDR3 DIMM CAS Latency CL7 Data Integrity Non ECC Buff Unbuffered Unbuffered Voltage 1. 5 Volt Form Factor 240 Pin UDIMM Warranty Lifetime Warranty MS ID Number 00804 100% Compatibility Guaranteed All Memory Modules are of Major Brands Samsung,