Stumbled upon this and noted that it was half the price of the similar Chenbro model. Has a bonus of 2 x 2.5" slots (vs 1 on the Chenbro) and integrated 10GbE (SFP+). Motherboard look to be an Inventec B420GA0, which I've never heard of. There's very little info on either the motherboard or server, so who knows about the quality, but it sure is cheap. Also, if it isn't obvious, this thing won't be quiet and there isn't a thing you can do about it.
Manufacturer: Kauri. Drive Bays: 12x3.5". Processor Speed: 3.1 GHz, 3.2 GHz. Installed Ram: up to 32GB. Maximum Ram: 32GB. RAID modes supported: 0, 1, 5, 10, 50. Model: 12.6.