Zoom 8x4 Cable Modem plus N300 Wireless Gigabit Router, DOCSIS 3.0, Model 5354, Certified by Comcast XFINITY, Time Warner Cable and Other Service Providers Combines a 343 Mbps DOCSIS 3 cable modem and an N300 Wireless-N router with 4 GigE LAN ports and 2 USB ports. Certified by Comcast XFINITY and Time Warner Cable and other cable services for own-your-own cable modem programs that eliminate modem rental charges that are typically 8 to 10 dollars every month Built-in high-performance N300 Wi-Fi router simplifies setup while saving space and dual internal antennas help to maximize wireless speed and provide extended range The 343 Mbps maximum download speed is up to eight times faster than DOCSIS 2 cable modems and this 8X4 cable modem is also faster than 4X4 cable modems Two USB ports and a built-in DLNA media server let you plug in a USB Flash drive or hard drive for Network Attached Storage (NAS) and let you store and retrieve files or stream video and audio to wired and wireless devices on your network Thisintegrated unit reduces cable and power adapter clutter and eliminates an external wiring connection to increase reliability by eliminating a common source of problems US based technical support and a two year warranty from Zoom Telephonics in Boston Massachusetts