Usually, when picking out a motherboard, I advise people to head for the top-shelf Z270 chipset if they're overclocking or the low-end B250 chipset otherwise. You do give up more than just overclocking with a low-end chipset, though. Besides that, overclocking small-form-factor PCs can be a pretty tricky task anyway. For those reasons, Asus' new ROG Strix H270I Gaming could be a perfect pick for small systems that still need a full set of chipset features.
In case the name didn't give it away, this board is similar to Asus' ROG Strix Z270I Gaming. You get a pair of DDR4 DIMM slots, two M.2 sockets (both supporting PCIe 3.0 x4), four SATA ports, and onboard 802.11ac Wi-Fi with MU-MIMO support. Unlike its Z270-powered brother, the Strix H270I Gaming packs two Ethernet ports—one with an Intel chip behind it, and another powered by a Realtek RTL8111H controller.
The H270I Gaming doesn't offer any USB 3.1 ports, though you still get six USB 3.0 ports, Bluetooth 4.1 support, and ROG SupremeFX audio powered by Realtek's ALC1220 codec. Asus hasn't announced any pricing or availability for the H270I Gaming, but expect it to be a few dollars cheaper than its Z270I cousin when it hits stores.