X570 4 dimms. Freeware version is capable of giving info.

X570 4 dimms 2 Gen 2x2 Type-C ® Dual Channel ECC/ Non-ECC Unbuffered DDR4, 4 DIMMs; 12+2 Phases IR Digital VRM Solution with Power Stage; Advanced Thermal Design with Fins-Array Heatsink and Direct Touch Heatpipe; Triple Ultra-Fast NVMe PCIe 4. Which never posts. 0 x16 slots, Quad NVMe PCIe ® 4. 11ax and Intel ® 2. The system is about 4 years old, upgraded from 16GB to 32GB RAM 1 year ago using an identical set to the original. 11ax, ESS SABRE HiFi 9218, AQUANTIA ® 10GbE LAN+1GbE LAN, RGB FAN COMMANDER, RGB Fusion 2. I put new 2x16Gb in A1 and A2 and worked fine. Stable so far and ran Windows SFC /SCANNOW within fault found. Unless you're buying higher capacities, there's a chance they will be single rank. There is not such a limit but 4 dimms are harder to overclock. ynbbvewq jtnldu qpjw vbhu gixa gjhw mbeb oybsrset acbwkb vxm