Anandtech takes a look at the MSI B350M Gaming Pro
A quote from the article:
Although most manufacturers have a primary focus on X470 chipset motherboards, AMD has made it clear that the B350 chipset will be sticking around for a long time. The MSI B350M Gaming Pro aims to offer gamers a low-cost option on the smaller mATX form factor, without all the glitz and glamour of RGB LEDs and over zealous power delivery configurations.MSI B350M Gaming Pro Review
The MSI B350M Gaming Pro targets the more budget conscientious gamer looking to use the B350 chipset, not just for an entry-level price, but also with a mATX form factor. While the appeal of the mATX form factor offers a smaller alternative to the regular ATX sized boards, the form factor usually allows for up to two graphics cards to be installed on the more premium boards; the MSI B350M Gaming Pro omits a secondary full-length PCIe x16 slot for a less bandwidth hungry and small PCIe x1 slot. Given the price point of around $80 at Newegg, the B350M Gaming Pro sits as not only one of the cheapest AM4 socketed mATX motherboards on the market, but as one of the cheapest AM4 offerings completely.