I have a QNAP TS431+. Works great and the latest firmware. I just upgraded to a nas that has native 2.5g ports.
$150 out the door.
https://www.qnap.com/en-us/product/ts-431+
My heat - 71-0
https://www.heatware.com/u/68874/to
$150 out the door.
https://www.qnap.com/en-us/product/ts-431+
My heat - 71-0
https://www.heatware.com/u/68874/to