Received my order yesterday, fiddled with it all evening and ran it all night through a USB 3 power-compatible extension cord. Performs wonderfully at stock 100MHz, around the expected 10+ GH/s. Made about a thousand "cashatoshi" running it overnight. Today, I started messing around even more, pushed the frequency up and added a fan through my case.
https://realityripple.com/omnIMG/KqJYBPh.jpg
Just used a drive tray from the front with a spare fan lead and an old 80mm, testing the temp with an ir temp monitor, can't believe how quickly it cools... Went from around to 180° F when running at 140MHz+ to just over 100° at 175MHz. Happy there 'cause I'm getting a decent 20 GH/s from it. The case even closes nicely, as you can see.
https://realityripple.com/omnIMG/vpHPp9h.jpg https://realityripple.com/omnIMG/MdIitZh.jpg

It's very entertaining to mess around with, and I haven't even touched the voltage regulator. Gotta say, being on solar without a grid connection, this low-wattage toy is fantastic. It does stop responding now and then if you push it too hard, but it seems to be fairly resilient, especially for second-tier stock.

Very happy with my purchase; all the best regards to your friend.