This one-in, one-out MIDI interface transfers 16 x 16 MIDI channels. It connects to any USB-equipped PC or Mac computer (Windows 98 or Mac OS 8.6) and requires no external power supply. Its compact size facilitates use with laptop and notebook computers. Installation is a breeze — no computer disassembly; no jumpers to set; no I/O addresses, IRQs, or DMA channels to configure. Just plug it in. PC/Mac. Includes 6' USB cable.