Express Systems will be Closing EARLY Wednesday, November 22nd, 2023 and will be CLOSED Thursday, November 23rd, 2023 & Friday, November 24th, 2023 in observance of the Thanksgiving Holiday. We will resume regularábusiness hours Monday, November 27th, 2023 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.