The RoadRunner 10 ADSL PCI is a type of ADSL (Asymmetric Digital Subscriber Line) modem card that connects to a computer's PCI slot. It allows the computer to connect to the internet via an ADSL broadband service, typically provided by an Internet Service Provider (ISP). This device is installed inside the computer, and it interfaces with the telephone line to provide high-speed internet access.

The RoadRunner 10 ADSL PCI Windows driver is the software that allows your computer's operating system (like Windows) to recognize and communicate with the RoadRunner ADSL PCI modem card. Without the correct driver, the modem will not function properly, and you won't be able to use the internet connection.