Express Systems will have an EARLY CLOSING Friday, July 1st, 2022 and will be CLOSED Monday, July 4th, 2022 in observance of The July 4th Holiday. We will resume regular business hours Tuesday, July 5th, 2022 at 9:00am EST. 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.