You are buying two (2) genuine SK Hynix 32GB DDR4-2666 ECC Registered server memory modules, 64GB total. Pulled from a working system and tested.
Specs: 32GB per module · 2Rx4 · PC4-2666V-RB2-11 · ECC Registered (RDIMM) · 288-pin · 1.2V · Part number HMA84GR7AFR4N-VK
Compatible with most servers and workstations that take DDR4 RDIMMs, including Dell PowerEdge 14th Gen (R640, R740, T440, etc.), HPE ProLiant Gen10, Lenovo ThinkSystem, and Supermicro X11 boards with Intel Xeon Scalable CPUs. Also works in many Gen13/X10 systems (runs at the platform's max speed).
Not compatible with standard desktop motherboards that only support non-ECC unbuffered (UDIMM) memory. Please check your system's manual before buying.
