Express Systems will be CLOSED Monday, January 20th, 2025 in observance of Martin Luther King Jr. Day. We will resume regular business hours Tuesday, January 21st, 2025 at 9:00am EST.
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.
