Our line of PCI RS-422/485 boards provide extensive choices for adding serial functionality to a system using minimal system resources. They also provide peace of mind. These meticulously designed boards strictly adhere to the PCI specification and have a proven failure rate of only .002% after burn-in. Add to that our long five year warranty, and a customer service team that is dedicated to exceeding your expectations, and you truly have the industry’s most reliable serial PCI boards.