Asus used Z97 as an opportunity to launch a fairly substantial overhaul of its UEFI BIOS design compared to Z87 but with Z170 nothing ground-breaking has changed. The well-rounded BIOS found on the Z97 Pro Gamer has been refined and modified for Intel's newest Z170 Express chipset and Skylake CPUs. The BIOS shares its aesthetics with ROG UEFI implementations though Asus is careful to not label the Z170 Pro Gaming as an ROG product in order to maintain its prestige.