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: 667 Internal memory: 2048 Internal memory type: DDR2 Memory layout: 1 x 2048 CAS latency: 5 Memory voltage: 1.8 V Registered: N Memory bus: 64 Module configuration: 256M X 64 Compatibility: A0735489 (DELL); A0735490 (DELL); A0735492 (DELL); A0735493 (DELL); A0743584 (DELL); A0743585 (DELL); A0743586 (DELL); A0764429 (DELL); A1189543 (DELL); A1229318 (DELL); A1229319 (DELL); A1229320 (DELL); A1229322 (DELL); A1229323 (DELL); A1229324 (DELL); A1229325 (DELL); A1249404 (DELL); A1312839 (DELL); A1371192 (DELL); A1763799 (DELL); A1763803 (DELL) Rack mounting: 240-pin DIMM