Model Brand: AddOn - Memory Upgrades Model: A1229323-AA Details Capacity: 2GB Type: 240-Pin DDR2 SDRAM Speed: DDR2 667 Cas Latency: 5 Voltage: 1.8V ECC: No Buffered/Registered: Unbuffered Compatible System: Dell Features Features: This Dell A1229323 compatible 2GB DDR2-667MHz Dual Rank Unbuffered 1.8V 240-pin CL5 UDIMM 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 our