To test the USB 3.0 ports on the motherboard, I plugged in an OCZ Trion 150 SSD via a SATA-to-USB 3.0 5Gbps adapter, which uses the ASMedia ASM1053 controller. We reviewed the SSD HERE, finding it delivers good speed at a budget price. Most importantly, it is capable of saturating the USB 3.0 bus, allowing us to test the speeds the USB 3.0 ports deliver. To test this, I ran both CrystalDiskMark and ATTO Disk Benchmark on the Trion 150 drive.
Again, the USB 3.0 performance is effectively the limit of the 5Gbps USB 3.0 bandwidth. Speeds well over 400MBps confirm the USB 3.0 ports are fully functional and rather speedy.