This product is either discontinued or we cannot get that from suppliers.
Kingston KVR16N11S8/4BK Non-ECC DIMM Memory, Capacity 4GB, 1 Module, Speed 1600MHz (PC3-12800), CAS Latency 11, FF DDR3, 1R (Single Rank), 240 Pin, Memory Voltage 1.5v.
Kingston offers extremely reliable, high performance memory and sells more upgrade memory than anyone in the world. Add reliable Kingston memory and watch your productivity soar.