USB

Intel's UHCI interface is supported, but it only supports USB 1 (12Mb/s) devices. Support for the alternative OHCI interface is in progress. EHCI (USB 2, 480Mb/s) support has not been started but is likely to follow before long, since plugging a USB 2 device (e.g., disk) into a system containing an EHCI controller causes all USB traffic to be routed to the EHCI controller, despite the presence of UHCI or OHCI controllers.

USB audio, mice and printers are supported (see usb(4)). USB disk support is almost ready for general use.

http://plan9.bell-labs.com/wiki/plan9/Supported_PC_hardware/index.html

nie ale nevidim dovod preco by to nemalo ist. teda problem by mohol byt ze externy disk sa tvari ako usb mass storage s cim nesom si isty ci vie robit. ale mozno nainstalovat to na klasicky disk a potom cez dd skopcit celu particiu...to by mozno slo.