The Z170-Gaming K3 motherboard is equipped with a Realtek ALC1150 CODEC, which is covered by an aluminum casing:

On the bottom area of the PCB, we will be able to spot the following interfaces:

-the F_Audio header

-the COM header

-the TPM header

-two USB 2.0 headers

-one System Fan header

-the Frontal Panel header but also two SATA 3 ports

A LED_DEMO header is also present near the COM header, but it is not documented:

The board is equipped with no less than four PCI-Express x1 slots and two PCI-Express x16 3.0 slots (one of which is x16 and the other x4 electrical); there is enough space between the x16 slots to fit even beefier cards:

A M.2 connector (socket 3) supports SATA and PCIe storage:

The chipset is covered by a nice themed G1 Gaming heatsink:

Besides the two SATA ports mentioned earlier, the board is also equipped with two SATA Express ports; if we do not have storage drives of this kind, we can always make use of four extra standard SATA 3 ports:

The memory slots are color-coded for an easier identification; nearby we have an USB 3.0 front panel header, along with the 24-pin ATX power connector but also one more SYS_FAN header. The board is not equipped though with Power/Reset hardware buttons or a Debug LED display, in order to cut production costs:

Between the memory slots and the CPU VRM, we will also find two extra fan headers:

The VRM heatsinks are quite slim and do not get in the way when installing larger CPU coolers; the board is equipped with seven power phases, which should be enough even when overclocking:

Here is also a look on the back side of the motherboard; here we can see for a fact that the secondary PCI-Express x16 slot is only wired for x4:

The motherboard can provide quite light show in our computer case, since the area along the memory slots and also the one near the audio interface is populated with LEDs:

On the I/O, the Z170-Gaming K3 does come with a combo PS/2 mouse/keyboard port, four blue USB 3.0 ports, one DVI-D port, one HDMI port, two USB 3.1 ports in red color, a RJ-45 port, but also the usual audio jacks: