Check the listing for details. Centurylink C1900a Dsl Modem Router. Condition: Used. Listed at 29.99 USD. The Centurylink C1900a is a versatile modem router that allows you to connect to the internet with ease. With four LAN ports, you can easily connect multiple devices to your network without any hassle. Whether you're looking for a modem router combo for your home or business, the Centurylink C1900a is a great solution for all your networking needs. This DSL modem router is perfect for those who want fast and reliable internet connectivity without any interruption. It is compatible with most major internet service providers and offers excellent performance. Its sleek design makes it easy to set up and use, and its robust features allow you to customize your network to meet your specific requirements. Get ready to experience fast internet speeds and seamless connectivity with the Centurylink C1900a modem router.