The Spectrum ES2251 D3.1 2.5G eMTA DOCSIS Advanced Voice Modem is a high-speed router designed for home networking and connectivity. With a maximum downstream data rate of 172 Mbps and DOCSIS 3.1 standard, this modem is compatible with PCs and offers two wired-Ethernet (RJ-45) ports for reliable connections. The sleek black design, along with the inclusion of Ethernet ports and support for the Spectrum brand, make this modem a versatile and efficient choice for users looking for a reliable internet connection for their home or office setup.