The Motorola SURFboard SB6121 is a DOCSIS 3.0 cable modem that offers a maximum downstream data rate of 172 Mbps. It is designed with a single Ethernet port for wired connectivity and is suitable for use with a PC. The modem's sleek black design and reliable brand reputation make it a practical and efficient choice for high-speed internet access in a home or small office setting.This item is preowned, so normal wear is to be expected. It comes from a smoke-free, pet-free home. If you have any questions, feel free to ask. No returns accepted.I am also willing to combine the shipping fee on multiple purchased products from my inventory.