Dell OptiPlex 5490 Series Intel Chipset Q570 Socket LGA1200 All-In-One Desktop Motherboard 09Y81 009Y81 CN-009Y81.
Chipset: Intel Q570 (SRKM4)
Socket: Intel LGA1200
Max Supported Memory: 64GB
Number of Memory Slots: 2
Memory Type: DDR4 SDRAM
Speed: 2666MHz, 2933MHz, 3200MHz
Type: All-In-One Desktop Motherboard