Dell OptiPlex XE3 Small Form Factor Series Intel Chipset Q370 Socket LGA1151 Desktop Motherboard 649MD 0649MD MX-0649MD.
Chipset: Intel Q370 (SR404)
Socket: Intel LGA1151
Max Supported Memory: 128GB
Number of Memory Slots: 4
Memory Type: DDR4 SDRAM
Speed: 2666MHz
Type: Desktop Motherboard