ASRock are well renowned for providing products with many great features at a price equal to or less than their rivals. The B450M Pro 4 (also Pro 4-F) continues with this tradition. Of the current crop of Micro ATX motherboards that support AM4 processors, THE ASRock B450M offerings provide great value and many features not found on the majority of Micro ATX AM4 motherboards which tend to be all very similar to each other or compromised. There are 2 Pro 4 versions (F and non F). The differences are minor but that should be taken into account where there is a possible choice between them. The Pro 4 is a slightly cut down version of the B450M Steel Legend that is currently at the top of ASRock's AM4 mATX range. The latest Ryzen 3000 series processors are supported provided a newer BIOS version is present. 1st and 2nd gen Ryzen plus all current Ryzen processors with integrated graphics are supported. For your money there is AMD Crossfire support (2-way) so you could potentially run a single dual processor graphics card in the 1st slot nearest the processor OR a single processor graphics card in each slot (with a slight performance hit). NVIDIA SLI is not officially supported. Overclocking features are present in the easy to use BIOS. I was able to get a Ryzen 7 1800X to run without issue at 3.95GHz (all 8 cores) within a few mouse clicks. Fan speeds and memory overclocking options are all easily found in the BIOS. The PRO 4-F has fewer fan headers than the PRO 4 (still better than many other MATX motherboards that usually only have 2). The stand out feature of this board is that power delivery components have decent heat sinks including the chip that supports video out if a processor with built in graphics is installed. A USB C port can be found on the rear of the board. The various connectors on the motherboard were all laid out in good locations including side exit SATA ports. There are two M.2 connectors available. Only one can be used with an NVME board (check ASRock website). If you want fancy LEDs on the motherboard (which the Pro 4 lacks) then the Steel Legend is an alternative (PRO 4 does have 3 sets of RGB headers though). Four RAM slots are available should they be required but support is finicky when all four are populated at the same time. It should be noted that if a SATA M.2 board is installed in the 'ULTRA' slot, it will not be recognised. If the same is fitted in the other slot then SATA port 3 on the motherboard is disabled. This will limit you to 3 storage devices on the 4 SATA ports should a M.2 board be present. I would recommend this motherboard to anyone looking to fit one into a Micro ATX case. Definitely amongst the best for AM4 processors (after MSI B450M MORTAR and ASRock B450M Steel Legend). Read full review
Verified purchase: No
Nice upgrade from b350m now there are 5 pwm fan headers the rgb headers have been separated so now you have 1 at the top and 1 at the bottom plus an argb header too
Verified purchase: Yes | Condition: New
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