Samsung 8GB (1x 8GB) DDR3L-1333 PC3L-10600 1.35V / 1.5V DR x4 ECC Registered 240-pin RDIMM RAM Module Speed_DDR2-533 CT16G4WFD8213 Capacity 16GB (1x 16GB)

CT16G4WFD8213 Capacity 16GB (1x 16GB) Brand Crucial Speed DDR4-2133 - 2133MT/s - PC4-17000 Voltage 1

M393A4K40BB0-CPB Capacity 32GB (1x 32GB) Brand Samsung Speed DDR4-2133 - 2133MT/s - PC4-17000 Voltage 1

This 16GB (2x 8GB) DDR3L 1600 MT/s Dual rank

On MacOS however

Samsung 8GB (1x 8GB) DDR3L-1333 PC3L-10600 1.35V / 1.5V DR x4 ECC Registered 240-pin RDIMM RAM Module Speed_DDR2-533 CT16G4WFD8213 Capacity 16GB (1x 16GB)Product Overview Dramatically improve performance and handle larger user and application workloads in your mission critical workstations and servers with this 8GB (1x 8GB) DDR3L 1333 MT s 240 pin RDIMM RAM module from Samsung . This Dual rank, x4 configuration RAM module is for use in DDR3L compatible systems and operates at 1333 MT s with an overall transfer rate of PC3L 10600. This RAM module also operates at a standard voltage of 1. 35V 1. 5V and