From:  http://rhel7.net/

RHEL 6.1 Released
Posted on Thursday 19th May at 2:22pm UTC

Red Hat Enterprise Linux 6.1 has today been released by Red Hat. This is 
the first major update since the release of version six in November.

In addition to many bugfixes this release includes full support for USB3 
(previously it was a technology preview), support for hot-adding of 
memory and CPUs on Nehalem-EX and many driver updates.

More information is available in the press release and release notes. To 
download visit RHN.

End quote.

Does X86-64 SL 6 support USB 3?  If not out of the box, can this be 
added and if so, how (URL with appropriate documents and lists of any 
needed RPMs)?  I have USB 3 on the hardware, but an automatic generation 
of /dev/sdX only appears when I use USB 2, despite having a USB 3 
interface on the external USB drive connected to the machine.

Yasha Karant