Express Systems will be CLOSED Friday, April 15th, 2022 in observance of the Easter Holiday. We will resume regularábusiness hours Monday, April 18th, 2022 at 9:00am. Wishing Everyone a Happy & Safe Holiday Weekend!
Serial cards deliver reliable, cost-effective and high serial port expansion; multiple form factors are available. Serial cards will enable you to easily add RS232, RS422, RS485 serial or parallel ports to your PC or server.