A Dell equivalent 2 GB Unbuffered Non-ECC DDR3 SDRAM - DIMM 240-pin 1066 MHz ( PC3-8500 ) from Hypertec.
Hypertec HYR31625684GBOE memory module 4 GB 1 x 4 GB ECC
Hypertec HYMFS2802G memory module 2 GB DDR3 1600 MHz
Hypertec HYMDL8402G memory module 2 GB 1 x 2 GB DDR3 1066 MHz
Hypertec HYU31025684GBOE memory module 4 GB DDR3 1066 MHz
Hypertec HYS31312881GBOE memory module 1 GB 1 x 1 GB DDR3 1333 MHz
Hypertec HYMIN8804G memory module 4 GB 1 x 4 GB DDR3 1333 MHz