The version I bought - the Audiobox USB as part of Studio bundle - is the 48KHz one. As suggested here I downloaded the latest PreSonus drivers etc. Good job I did as the ones on the CD were very old.
I had a very unhappy time once installed & connected though: all my USB disk drives & peripherals kept offlining (instant panic). Eventually, after lots of un-installing, re-installing etc etc I actually read the driver release notes (available one the PreSonus site as a tiny link), which said there were some problems with using USB 3 ports ... changed to a USB 2 port and everything works fine.
I'm used to ASIO4ALL v2 ... this is a dream to use, low latency etc. However, I do wish they had included a guide to setting up using the interface in FL Studio (I'm not going to spend time learning the supplied Studio 1 software).
The CD software Studio 1 release had no serial number - had to register with PreSonus, download the current demo version and use that serial with the supplied version. Not cool.
Anyway, as said elsewhere, nice box, good feel to it and the supplied cables etc were fine.. Wish I'd realised the M7 was a mono mic (Doh!) sounds good though. Probably not going to use the headphones - I like my Sennheiser HD 25 SP II Closed Headphone
too much. Nice and light, though very transparent.