2pcs of 4GB DDR3 PC3-10600 CL9 Dual Ranked x4 based Registered ECC ò DDR3-1333 1.5V 1024Meg x 72 Lifetime warranty by Computer Memory Solutions 2pcs kit 30 day money back warranty Manufactured by Computer Memory Solutions NOTES DDR3-1600 modules automatically clock down depending on which Intel Xeon model is installed. This system supports either Registered ECC or Unbuffered ECC memory. Mixing Registered ECC and Unbuffered ECC modules is not supported within this system. Compatible with
Lenovo ThinkStation D30 Maximum
Memory: 128GB ECC UDIMMs 512GB Reg
ECC RDIMMs Expansions: 8 Socket (s) per CPU 16 Socket (s) using two CPUs