Is any third party USB 2.0 PCI card needed for USB 2.0 support on older SUN SPARC / x86 machines?
Yes, PCI Host Controller USB 2.0 cards from third party vendors such as Addonics, D-Link or Belkin can be used before connecting USB 2.0 devices for older SPARC/x64 machines. Please check the list of verified USB devices at http://www.sun.com/io_technologies/stdpci/STDPCI3.html for other vendor details. On the latest Ultra 20 and other x64/x86-based SUN platforms, USB 2.0 is natively supported.