OWC 32GB (2x16GB) DDR3 1333 PC3-10600 CL9 2Rx4 240-pin 1.5V ECC Registered RDIMM Memory RAM Module Upgrade Kit Compatible with Lenovo ThinkStation...

ECC REGISTERED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED memory. OWC 32GB UPGRADE: Consists of 2pcs of 16GB DDR3 1333 PC3-10600 CL9 2Rx4 240-pin 1.5V ECC Registered DIMM Memory RAM Module Upgrade compatible with Lenovo ThinkStation models C20x And D20. INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing. MAXIMIZE YOUR SERVER: With OWC's ECC Registered Server Memory, you will extend the life of your old infrastructure or save money when building a new one. Replacement for Lenovo part numbers 03X3813 and 0A89413.