motherboard link:
http://www.supermicro.com/products/motherboard/ATOM/945/X7SLA.cfm?typ=Hram link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231122they were purchased between late 2010 and early 2011
were kept in a datacenter and ran as capacity demanded. no proof but i would estimate actual powered on use of them around 2 years
all guaranteed to be working on delivery. pulled from working servers to upgrade to motherboards that support IPMI
great low power boards. with a 3.5 mechanical drive they only pull ~0.25 amp
please feel free to ask any questions and make any reasonable offer will be considered. would rather get these moved than watch dust collect