Product Id: 29779691
Description: AddOn 4GB DDR3-1066MHz SODIMM for HP 577606-001 - DDR3 - 4 GB - SO-DIMM 204-pin - 1066 MHz / PC3-8500 - CL7 - 1.5 V - unbuffered - non-ECC - for HP EliteBook 8440p, 8540p, 8540w, 8740w; Pavilion m1-u001dx; ProBook 4720s
Mfr Part #: 577606-001-AAKThis HP 577606-001 compatible 4GB DDR3-1066MHz Dual Rank Unbuffered 1.5V 204-pin CL7 SODIMM is 100% guaranteed to be compatible with your system and to work right the first time. Adding additional memory is the best way to increase the performance of your system. All memory is built to strict JEDEC standards to meet or exceed the Tier 1 OEM's factory requirements.