Serial RS-232 and PS/2 ports in one small adapter, Great for Barcode Scanners and Serial Printers. Features : USB to PS/2 & SERIAL CONVERTER High-Quality USB to 2 PS/2 and 1 Serial Converter ADD PS/2 Ports and Serial RS-232 To any Windows Based LapTop/Desktop with Ease! Full compliance with universal serial bus specification revision 1.1 Embedded peripherals including: RS232 serial port(works with PDA's/Cell Phones/Modems/Cameras) PS/2 keyboard port PS/2 mouse port supporting two buttons PS/2 mouse and 3-button PS/2 mouse as well as thumb-wheel PS/2 mouse Support advanced power management capabilities compliant with bus-power interface specifications Full compliance with UHCI/OHCI. Full compliance with Universal Serial Bus Specification Revision 1.1 Embedded Peripherals Including. -RS232 Serial Port -PS/2 Kevboard Port -PS/2 Mouse Port supporting 2 Button PS/2 Mouse and 3 Button PS/2 Mouse as will as Thumb-Wheel PS/2 Mouse Support advanced power management capabilities compliant with Bus-Power interface specification. Easy plug and play installation. Supports Windows®98, Windows®ME , Windows®2K & Windows®XP.