MIDISPORT 2x2 is a multi-port MIDI interface for USB-equipped PC and Apple computers. MIDISPORT's high-speed USB (Universal Serial Bus) connection to the computer assures reliable, immediate MIDI transfers. Installation is a breeze, no computer disassembly, no jumpers to set, no I/O Addresses, IRQ's or DMA channels to configure! Expansion is just as easy, just plug in additional MIDISPORT units for more MIDI ports.