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 1600 PC3-12800 CL11 2Rx4 240-pin 1.5v ECC Registered DIMM Memory RAM Module Upgrade Kit memory compatible with Supermicro Motherboard models X9DAE , X9DAi , X9DBS , X9SRA And X9SRE series 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 Supermicro part numbers MEM‐DR316L‐HL01‐ER16 and MEM‐DR316L‐SL01‐ER16. OWC DDR4 memory is Fully compliant with JEDEC specifications, ROHS compliant, providing a warranty safe upgrade. OWC Memory is the most cost effective and simple DIY upgrade you can install to unleash your Mac or PC's full potential and speed up overall responsiveness. Become a multitasking maven when you upgrade your Mac or PC with OWC Memory. Open more apps. Open larger files. Plus, work with multiple files all at the same time. We test every OWC memory module at our in house lab so you can upgrade with the confidence that your memory is built to last. We built your OWC Memory upgrade to meet or exceed the toughest industry specs to provide years of worry-free service. OWC recommends that all DIMMs be the same capacity, speed, and manufacturer to ensure optimal memory performance.