The motherboard is equipped with no less than four PCI-Express x16 slots and also three PCI_Express X1 slots:
Between the slots we will find three PCIe Gen3 M.2 32Gb/s ports for extra storage (RAID is also supported):
By using PCI-Express slot stainless steel shielding, we do have a highly reinforced design which can support without issues nowadays heavy graphics cards:
The Z170 PCH is also covered by a themed GIGABYTE OC heatsink:
A combination of SATA Express and regular SATA III connectors is available with this board:
Nearby we do also have two extra USB 2.0 ports for fast BIOS updates or for transferring other data while benching. The OC PEG header is meant to supply extra power to the PCI-E slots on the motherboard, when we are using extreme configurations as 4-way graphics:
Two USB 3.0 headers are ready to be used and these are located between the SATA ports and the 24-pin ATX power connector:
In their vicinity we will get to see the Memory Safe button, which reduces the DDR4 timings for increased compatibility, the Settings Lock button which remembers our successful boot settings and applies them, even if the CMOS has been reset, but also one Clear Battery Button, which has the same effect as removing the CMOS battery for resetting it. This is not all! We do also have voltage reading contacts and headers for using the supplied adapters, handy when using a multimeter:
On the right of the 24-pin ATX power connector we can find the OC DualBIOS Switch, for selecting between the main and backup BIOSes, an OC Trigger Switch in order to switch between low (during boot) and extremely high frequencies, a Clear CMOS button which does not lose the pre-configured profiles, the DTB button which gets us straight to the BIOS menu after boot, one blue Reset button but also a set of four OC PCI-E switches which allows the user to turn on or off the PCI-E lanes in order to troubleshoot easier:
One Debug LED display is available on the top right corner: