Original Apple MiniDock docking station for the PowerBook Duo ranges. It clamps onto the back of any PowerBook Duo and provides additional ports not available on the Duo itself. The ports provided are modem, 3.5mm audio in and out jacks, HD SCSI, printer & modem serial ports, Apple 15-pin monitor port, ADB and HD port for an external 3.5" floppy disk drive. It also provides a passthrough DC-in port and power button.