Even before the availably of a USB 3.0 hardware device, it seems that support has been built into the Linux kernel, and will debut with the release ofv2.6.31. On June 7, Intel's Sarah Sharp, the chief author of the driver, announced in her blog.Greg K-H has queued the patches for 2.6.31, so Linux users should have official USB 3.0 support around September 2009. This is impeccable timing, since NEC recently announced they'll be producing 1 million xHCI PCI express add-in cards in September ... I'm working with Keve Gabbert (the OSV person in my group at Intel) to make sure that Linux distributions like Ubuntu and Red Hat pick up the xHCI driver. Advanced users can always compile their own kernel on a standard distro install:'