49Y3694-HY - Hypertec Legacy - DDR3

module - 4 GB - DIMM 240-pin - 1333 MHz / PC3-10600 - registered - ECC Chipkill - for Lenovo System x3400 M2 7836, 7837; x3500 M2 7839; x3550 M2 7946; x3650 M2 7947