From 1 September 2017, certain new vehicles will be type-approved using the World Harmonised Light Vehicle Test Procedure (WLTP), which is a new, more realistic test procedure for measuring fuel consumption and CO2 emissions. From 1 September 2018 WLTP will fully replace the New European Drive Cycle (NEDC), which is the current test procedure. Due to more realistic test conditions, the fuel consumption and CO2 emissions measured under the WLTP are in many cases higher compared to those measured under the NEDC. More information can be found by visiting
A portion of the PCH heat sink comes off to reveal the primary slot, which, unlike the vertical slot at the top of the board, supports SATA mode in addition to the expected PCIe x4 mode. Also shown in this closeup are “3D Mounts,” meant for printable covers for which Asus hosts the models, two thermistor headers, the VROC interface (which enables software RAID for PCIe drives connected to the CPU), a header for a Thunderbolt upgrade card, and an AC97-style front-panel LED and switch section. The latter has four additional pins set to the right for PC Speaker and AT-style power LEDs. Also heer: three of the board’s seven four-pin fan headers, the solitary USB header, one of the two USB headers, a five-pin header for an Asus fan extension card (sold separately), an onboard power button, a Port 80 diagnostics display, a legacy serial COM port, and one of the two RGB headers.