ASRock came up with a new niche motherboard that lets you install a graphics card parallel to the plane of this Micro-ATX motherboard, without the need for PCIe riser cables. This is intended for special compact cases that use a PIO (parts-in-one) form factor.
As the ASRock marketing photos suggest, you can use this type of hardware to mount a PC with a high-end video card to the VESA mount of your display.
Here's a look at the other main features of the Z170-PIO2 motherboard:
Its star-attraction aside, the Z170-PIO2, as its name suggests, is based on the overclocking-ready Z170 Express chipset. It supports up to 32 GB of dual-channel DDR4 memory with its two memory slots. The board draws power from a combination of 24-pin ATX and 4-pin CPU power connectors. Besides the angled PCIe x16, you get an mPCIe slot (for WLAN cards), and one 32 Gb/s M.2 slot. Four SATA 6 Gb/s ports, 6-channel HD audio, four USB 3.0 ports, and gigabit Ethernet make for the rest of its connectivity.