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: 1066 Internal memory: 4096 Internal memory type: DDR3 Memory form factor: 204-pin SO-DIMM CAS latency: 7 Memory voltage: 1.5 V ECC: Y Registered: N Memory bus: 64 Lead plating: Gold Module configuration: 512M X 64 Compatibility: A2038272 (DELL); A2058521 (DELL); A2884835 (DELL); A3198148 (DELL); A3414617 (DELL); A3583288 (DELL); A3721488 (DELL); A3721489 (DELL); A3721509 (DELL); A3721510 (DELL); A3721516 (DELL); A3761099 (DELL); A3761100 (DELL); A3761102 (DELL) Rack mounting: 204-pin SODIMM