What are the maximum supported memory speed and capacity for this motherboard?
The B550M Pro-VDH WiFi supports up to 128GB of DDR4 memory across 4 DIMM slots. It supports DDR4 speeds from 1866 MHz up to 3200 MHz by JEDEC standard, and up to 4400+ MHz via A-XMP OC mode, with 1DPC 1R configuration achieving the maximum speed of 4400 MHz. (Page 15)
From the official Msi B550M Pro VDH WiFi Motherboard manual, page 15
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