The Toshiba SurePOS PCI Serial Port Controller Windows driver is a device driver used to enable the PCI-based serial ports on Toshiba SurePOS systems to work properly with Windows operating systems. The Toshiba SurePOS is a line of point-of-sale (POS) systems designed for retail environments, and the PCI Serial Port Controller provides a method for connecting peripheral devices, such as receipt printers, barcode scanners, or other serial devices, to the POS terminal through the PCI (Peripheral Component Interconnect) bus.