1GB DDR3-1333 Non-ECC SO-DIMM
1GB Module - DDR3 SO-DIMM - Non-ECC - Unbuffered - 1066MT/s - PC3-8500 - 7ns CAS Latency - 1.5V
4GB DDR3L-1333 SODIMM
4GB Module - DDR3 SO-DIMM - Non-ECC - Unbuffered - 1333MT/s - PC3L-10600 - 9ns CAS Latency - 1.35V - Lifetime Depot Carry-In Mfg. Warranty