Additionally, Asrock has shared the second port with the eSATA connector found on the boards I/O panel.
Because the A75 FCH “only” offers four USB 3.0 ports, Asrock has added another ASMedia controller.
Asrock has opted for Realtek chip to provide audio.

The eight-channel ALC892 audio codec features premium Blu-ray audio support as well as support for THX TruStudio.
The I/O panel carries five 3.5mm jacks and a single optical S/PDIF-out port.
The secondary slot is wired for x8 bandwidth while the third slot is limited to x4.
When using Crossfire or SLI, you’re best sticking with a dual slot solution.
When doing so, the primary and secondary slots are limited to x8 bandwidth.