Just like it was the first to race out of the gate with Ryzen-ready AM4 motherboards, Biostar is again first to market with a Socket AM4 board in mini-ITX form factor. The X370GTN just showed up on the company's website, and as its name implies, it uses the X370 chipset. Despite its small size, the X370GTN is a fairly full-featured motherboard, with a USB 3.1 Type-C port, a back-mounted PCIe x4 M.2 socket, and two DDR4 DIMMs supporting transfer rates up to 3200 MT/s.
Biostar's choice of the X370 chipset is a little unusual for such a small mobo. AMD previously announced that the X300 and A300 chipsets would be intended for small-form-factor machines. This particular board doesn't take advantage of all of the benefits of X370, like PCIe lane bifurcation (for multi-GPU configurations) and extra SATA ports.
Even still, you get two USB 3.1 ports, four USB 3.0 connectors, four SATA 6Gbps ports, and a full-size PCIe x16 slot in addition to the aforementioned M.2 socket. The board includes HDMI 1.4 and DVI-D connectors, although as with other Ryzen boards, you'll have to step down to a Bristol Ridge APU to make use of them. Realtek supplies both LAN and audio chips for this board. Finally, Biostar furnishes the X370GTN with Vivid LED DJ support along with a pair of 5050 LED lightstrip headers.
Since Biostar quietly added the X370GTN's product page to its site, we don't yet know how much it will cost nor when it will be available. Given the limited availability of Ryzen motherboards, you may want to consider snapping this up if you see it in stock.