Convert your serial port or printer port devices into USB Serial or Parallel devices using a Prolific Technology. Older legacy devices that needed a serial RS232 or IEEE 1284 parallel ports to operate can now be used with your USB ports! USB Serial drivers included on disk. All items on this site can be order in quantity discounts!

USB Serial Multi-Port Converter uses the prolific controlled technology for conversion and switching.	USB Serial Dual Port RS232 port converter with Prolific chip technology

USB Serial RS232 Converter with Prolific Technology	USB Serial RS232 Serial/ ieee 1284 Printer Converter using Prolific Technology	USB Serial Quad Port RS232 Converter with Prolific controlled technology