These were almost plug and play. I used CGMINER version 4.2.3 and used the “–anu-freq 250” flag in the bat file I use for turning on the mining rig. This is what gets me 2.0Gh/s. It should be noted that these are likely to be toys only at this point.. since you’ll get about $0.03 per day per card (with it ever decreasing).

https://www.amazon.com/BITMAIN-ANTMINER-U2-Bitcoin-Overclockable/dp/B00ITD5NV6