Lexmark delivers high-powered solutions, services and supplies that meet or exceed the needs of customers ranging from the small office to the large corporate enterprise. Years of printing industry leadership, coupled with a close relationship with its customers, allow Lexmark to develop high-quality, easy-to-use business products and services. This RS-232C Serial Interface Card installs into the printer's PCI-based, Internal Solutions Port. It supports a standard RS-232C interface using a 25-pin D-shell female connector.