QNAP TS-659 Pro+ or TS-459 Pro+

One of the units is available because I upgraded my QNAP to use Roon. The unit has been used primarily with iSCSI, satisfyingly and competently supporting SMB as well. They are identical in every respect except that one has six drive bays and the other has four. The first unit shown in the photos is the one I upgraded from; the other is currently operational, but I can swap them—the process takes only three minutes. TS-659 Pro+ - €300 or TS-459 Pro+ - €250