Lenovo.Memory 16 GB DIMM 288-pin DDR4 SDRAM 2133 MHz (PC4-17000) Unbuffered 4X70M41718-01 4X70M41718 £66.00
Lenovo.Memory 16 GB DDR3 RDIMM 1866 MHz (PC3-14900) Registered ECC (alt FRU 46W0711, 46W0714) 46W0712-01 46W0712 £71.50