With Intel's release of Haswell, many PC enthusiasts were awaiting to hear the news if the rumored USB 3.0 bug was indeed real, and did in fact make it to production. Intel's latest CPU may indeed come with a much more robust USB 3.0 controller baked into it, but it also is broken technology. Right now, if you attach a USB 3.0 device to a Haswell system and then at some later point the OS enters S3 standby mode - while the drives are still attached - and then resume from the S2 state, errors can occur. In other words, the brain of USB 3.0 loses its mind and everything from applications using that external device to data not saved may be lost. According to this non-exhaustive compatibility test, 14 out of 22 drives didn't get along with Haswell.