True workstation and server boards tend to just have higher quality parts and often things you would expect to see such boards. Server boards might have dual power plugs so you can hook up backup PSUs. Or they will have built in RAID controllers, dual NICs, etc. Workstation boards are similar, though usually its just beefier parts as opposed to the dual parts. To my knowledge you can install any version of windows on any board, as long as there is a hope for driver support. Check your board for drivers.