Spent some time faffing around with it last night, it has a USB connector which can't be used for power so(after seeing a blog post) I soldered a couple of pins together so it could be used(I was too cheap to buy a power jack). Then had some trouble getting the distro to work(OrangePI-PC_Ubuntu_Vivid_Mate.img (http://www.orangepi.org/orangepibbsen/forum.php?mod=viewthread&tid=342)) - properly valid distro images give a red led(plus ethernet lights), invalid have no red light. Then had some trouble getting the HDMI to work, ended up using the script.bin.OPI-2_1080p50_hdmi option from scriptbin_kernel.tar.gz - that was the only option I could find that gave me a display on my HD TV and my 1920x1200 Hanns.G monitor.
(http://imgur.com/eIqqEaml.jpg)
http://blog.atx.name/orange-pi-pc-first-impressions/