Kingston Technology is the world?s independent memory leader and is well-known for providing high quality memory products at an attractive price. System Specific memory modules are designed and tested in the relevant systems prior to release; and they are guaranteed to be 100% compatible with your system. All Kingston System Specific memory come with a lifetime warranty. Memory clock speed: 1333 Internal memory: 2048 Internal memory type: DDR3 Memory form factor: 204-pin SO-DIMM CAS latency: 9 Memory voltage: Unspecified ECC: Y Registered: N Memory bus: 64 Lead plating: Gold Module configuration: 256M X 64 Chips organisation: X8 Compatibility: 575479-001 (HP); 577605-001 (HP); 577779-001 (HP); 587831-001 (HP); 598856-001 (HP); AT912AA (HP); AT912ET (HP); AZ549AA (HP); VH640AA (HP); WL784AV (HP); WL785AV (HP) Rack mounting: 204-pin SODIMM Memory ranking: 1