The Io1 is a PCI USB card which supports both USB 2.0 and 1.1 with data transfer rates of 1.5, 12 and 480Mbit and provides the Amiga with four USB ports. The Io1 appears to be a rebranded card intended for the PC supplied with Amiga drivers, but this has not been confirmed. It is supported both by the Poseidon USB stack and the VFD USB stack. An optional extender called the Io1 Orbit Link is also available which expands the card with an additional USB port. A G-Rex busboard may be required in order to use the card.