ASUS ROG STRIX B250H GAMING LGA1151 DDR4 HDMI DVI M.2 B250 ATX Motherboard with USB 3.1 – Newegg.com

M.2 1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (both SATA & PCIE mode) *2
1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x4 mode) *3

*2 The M.2_1 socket shares SATA_1 port when using M.2 SATA mode device. Adjust BIOS settings to use a SATA device. M.2_1 slot shares bandwidth with PCIe x1_1 and PCIe x1_2 slots. When PCIe x1_1 and PCIe x1_2 slots are occupied, M.2_1 slot runs at x2 mode.
*3 The M.2_2 socket supports Intel Optane Technology. Intel Optane Technology only supported when using 7th Generation Intel Processors. Before using Intel Optane memory modules, ensure that you have updated your motherboard drivers and BIOS to the latest version from ASUS support website.