Summary: There is a problem with power delivery to the usb ports. They cease to work when certain devices are plugged in (flash drives) and drop connection intermittently with others (cordless mouse and keyboard). Although I've decided to deal with the problem, can't say I'm too happy about it.
Summary: The first one of these I received had a bad CPU Socket that was causing a memory error that would not let the PC Boot at all. After a small search on the internet I discovered that these boards occasionally have a few pins not aligned properly in the socket that causes this. Amazon sent me a new board in two days and it works perfectly. I tested one memory stick in each slot to make sure all slots were working.
Integrated graphics, 32gb ram and *eight* sata ports
whip "whip", Amazon
8 October 2013
Summary: I have over 10 of these boards. Every single one has worked w/o issue. I use these as cheap drive/ram servers. Pros: - price - great for the feature set / stability - 8 sata ports - granted they aren't all sata III, but having 8 instead of the usual 6 on a board this cheap is *really* useful.
Summary: The motherboard was defective. It happens. No problem, just RMA it! No. They've completely given me the run around-- ASRock doesn't have a contact phone number, are only accessible by email, and so far still hasn't sent me my RMA number. I initiated this request over a month ago. I gave up and bought a new one. Invest in a company with some semblance of a customer service department.
Summary: Bought this board for its cheapness and support of VT-d so I could run virtualization (ESXi) with passthrough. So far no problems installing and running ESXi. It supports the in NIC, SATA and PCI ports. Installed CPU and Memory with no problems. Have not tried Windows but if ESXi runs on this boards, Windows will.