bought well over dozen of them over time now regretting it badly
1st most pools are not able to mine on them aswell the apollo version miner
worst still i have 10 fans not working at all or not spinning like they used to- and at current prices be costly to buy and suffer the same results as i did
i even rented all futurebit miners on rentals and i got so many not hashing and being abused by rental admins that the rigs are crap and had my accounts suspended cause running them if i run l3 antminers no problem