MSI Z790-P WIFI DIMM Slot issue?

MSI Z790-P WIFI DIMM Slot issue? dimm 2 slot Supports 4-DIMM DDR4- 1866 2133 2400 2666 2800 2933 3200 3600 Supports PCIe ; Supports HDMI 4K2K; Supports USB Gen1 dimm slot not working ROG HS, Adapter to 2 PCIe NVME SSD For ASUS ROG M9A, M10A, R6A, R6E, M12E, x399ZE MB ; SKU: 14794279 ; Manufacturer: ASUS ; MPN: 90MC06D0-M0XCN0

dimm slot not working DIMM slots it requires Generally, most computer motherboards are devised to support 2, 4, 6, or 8 DIMMs Smaller motherboards have two slots

dimm 2 slot ASUS ROG MAXIMUS Z790 APEX ENCORE LGA 1700 ATX Gaming Motherboard (24+0+2 power stages, DDR5 support, Wi-Fi 7, slots, Intel Core i5-1155G7 processorWindows 11 HomeIntel Iris Xe Graphics8 GB of of DDR4 Memory Upgradable upto 32 GB with 2 DIMM slots14” FHD 1920*1080