Add one RS232 Serial, & one IEEE 1284 Parallel port to your computer through a single USB (Universal Serial Bus) connection. The ICUSB2321284 1S1P USB (Universal Serial Bus) to Serial/ Parallel Adapter Cable enables you to connect DB9 RS232 serial devices & IEEE 1284 parallel devices to your PC or Linux laptop or desktop computer, through a single USB (Universal Serial Bus) port, as though the computer offered onboard connectors. An innovative solution, the adapter cable features both a parallel & serial port that can be used simultaneously, delivering serial & parallel data rates of up to 921.6 Kbps & 1 Mbps (respectively) to ensure optimum performance from your connected devices. Simple to install & use, the serial/parallel USB (Universal Serial Bus) adapter is a cost-effective solution that bridges the connectivity gap between modern computers & legacy serial peripherals.