Another step up you’ll find the Z87-Plus, a board with lots of similarities with the Z87-A. The number and types of expansion slots are the same. The first difference is the number of Serial ATA 600 ports, six on the –A and eight on the -Plus. The two extra connectors come from an ASMedia ASM1061 controller. The number of USB 3.0 ports has been increased from six to eight, six of which are external. The controller for these also comes from ASMedia.
The audio-codec is identical (including the DTS software), but the Gigabit LAN port comes from an Intel WG-I217V chip which reportedly performs better. The number of fan connectors is increased to six, and the CPU fan connector also has the automatic PWM detection.
The CPU power supply also has eight phases and the extra features of the Z87-Plus make their return here, with a couple of additions. The Plus has an onboard power button, and there’s also BIOS Flashback which lets you update the BIOS from a USB stick without the presence of a CPU or RAM.
The BIOS is the same.