I ordered on May 11th. They said it would take 3-5 days to ship. It finally arrived on June 1, and in the interim they only replied to my emails asking for an update after I posted my initial negative review here on this site.
When it arrived, the fan grill on the front of the Z15 was dented such that one of the two fans didn't spin. Probably damaged in shipping. It was easy to fix, but was concerning in that if I didn't notice it, it might have burned itself out.
The power supply that came with it was visibly damaged, with dents in the box and one of the 12V power adapters coming out of it had been ripped apart. Running the Z15 with this power supply resulted in the power supply box becoming too hot to touch within just a couple minutes. In about 10 minutes, the 10 A fuse that I had installed to protect my house in case of a short burned out. Good thing, as evidently whatever electrical short was going on in that power supply may have started a fire otherwise. I emailed asicminermarket on June 3 and have not heard a reply since (now Aug 9).
I have a replacement PSU from eastshore. Xyz (which I paid for myself), who I've had repeated good experiences with (all new hardware). The Z15 from asicminermarket performed moderately well when combined with a working power supply.
However the worst problem I only recently discovered: it can't cool itself as well as its peers. It runs at least 10 degrees C hotter than its neighboring Z15s on the same shelf. And yesterday (Aug 8), it just quit working. The fans stopped spinning and it exceeded its temperature safety level of 110 C and shut off within seconds of being powered up.
I've emailed asicminermarket again to see whether they will honor a warranty claim but so far I have received no response.
Other minor issues include:
* Everything was *filthy* when it arrived. Black dust covered the PSU and Z15, inside and out. I suppose it to be soot or air pollution.
* A screw was missing in the Z15.
* The power cable they supplied doesn't fit my U.S. 220V outlet. Maybe not their fault, but specifying what I would be getting more precisely would have helped me order all the parts I would need so I wouldn't lose time and money after the miner (finally) arrived.