Shuttle PC23, 3.5", 480 Mbit/s, G/P/T-series, USB 2.0, Windows 98SE/ME/2000/XP/Vista, Mac OS X Shuttle PC23. Supported drive bays: 3.5", Data transfer rate: 480 Mbit/s, Compatible products: G/P/T-series. Interface: USB 2.0. Compatible operating systems: Windows 98SE/ME/2000/XP/Vista, Mac OS X