Dell Memory Upgrade - 16GB - 2RX4 DDR4 RDIMM 2933MHz Compatibility This product is compatible with the following systems: PowerEdge C4140 PowerEdge C6420 PowerEdge FC640 PowerEdge M640 PowerEdge M640 VRTX PowerEdge MX740c PowerEdge MX840c PowerEdge R540 PowerEdge R640 PowerEdge R740 PowerEdge R740XD PowerEdge R740xd2 PowerEdge R840 PowerEdge R940 PowerEdge R940xa PowerEdge T440 PowerEdge T640 Precision Workstation 5820 Tower Precision Workstation 7820 Tower Precision Workstation 7920 Tower Precision Workstation R7920 Precision Workstation R7920 XL Precision Workstation T5820XL Tower Precision Workstation T7820XL Tower Precision Workstation T7920XL Tower