Digi International ClassicBoard 4 port PCI RS-323 Card (77000576)Open Box - minor rust on back of floppy disk.Offering unparalleled reliability and ease of installation, the Digi ClassicBoard serial card family provides the ultimate in cost-effective communication technology. The ClassicBoard Family is best suited to applications where the CPU is able to devote some of its resources to handling computations or to real time applications that require short latency time intervals. This solution is ideal for connecting cash registers, print receipt devices, scanners, and other peripheral devices in retail POS systems. It can also be used in applications using sensors, switches, measurement devices, factory automation, EDI, industrial control p rocessing, and data collection.