Connection: Connect a RS-232 serial device such as a modem to a USB port on your computer Quick Installation: Easy installation with Universal Plug and Play (UPnP) Compatibility: Supports multiple operating systems Ports: Supports USB 1.1 and compatible with USB 2.0 and USB 3.0 ports Devices: Connect RS-232 serial devices such as modems and network switches using the widely supported USB standard found in most laptops and desktops today Protection: 2 Years TRENDnet Manufacturer's warranty