Delidded Samsung SSD 970 EVO Plus 1TB Fully working used to have it in a server but now is surplus to requirements used to have a CPU cooler on it since it would be caching every day but I have now upgraded to a 1tb 990 pro Heat sink? Thermal paste and copper plate bigger and better than original Heat sink for the nands on the back is intact 1gb lpddr4-1866mhz dram cache 600tbw (same for all 1tb samsung m.2 like my 990pro)