Those things ran quite well, I bought those as one of my first miners besides my old Block Erupter. Pretty sure they ran the same chip the Block Erupter ran, with Icarus as well. Only issue was that they got exceptionally hot. Were actually fun miners to use, it's sad that they've been gone. Last few sold in early 2016 iirc. Most of mine only ran to 300mh/s, the ones they had were probably scrapped from the old block erupter units, then soldered onto boards or something of the like.