Express Systems will have an EARLY CLOSING Friday, Sept 3rd, 2021 and will be CLOSED Monday, Sept 6th, 2021 in observance of The Labor Day Holiday. We will resume regular business hours Tuesday, Sept 7th, 2021 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.