Motorola SURFboard SB6141 DOCSIS 3.0 High-Speed Cable Modem- BLACK (OEM Brown Box) 10/100/1000 Mbps Ethernet port to connect with router or computer DOCSIS 3.0 certified, capable of up to 343 Mbps and upload speeds up to 131 Mbps based on Cable provider service Compatible with all major CABLE providers like Comcast/Xfinity, Cox, Charter, Time Warner, Mediacom, Bright House. Call your ISP to verify compatibility Compatible with Windows, Macintosh and UNIX computers Front-panel LEDs indicate status and simplify troubleshooting