Curtis Connections Perfex 2-way IEEE 1284 AutoSwitch designed for high-speed automatic bi-directional sharing of printers, scanners, Zip drives, and other parallel peripherals. This vintage computing accessory supports all IEEE 1284 modes and popular file transfer programs, featuring built-in Bi-tronics printer emulation. The unit allows for reversible and file transfer functions between two PCs and one device or one PC and two devices. It comes in its original box with the software utilities installation floppy disk included. Compatible with Windows 95/98 and leading parallel printers from brands like HP, Canon, Compaq, and Epson. The box shows significant shelf wear and aging, but the device itself remains in unused condition.