This article covers Cisco EPC3212 ケーブルモデム.

Overview

The Cisco EPC3212 is a DOCSIS 3.0 cable modem that delivers up to 343 Mbps downstream and 131 Mbps upstream. It is compatible with major cable internet providers such as Xfinity, Cox, and Spectrum. As a standalone modem (no built-in router), it requires a separate router for Wi-Fi or multi-device networking. With 8 downstream and 4 upstream bonded channels, the EPC3212 provides a stable connection for everyday browsing, streaming, and light gaming. It features a single Gigabit Ethernet port for wired connectivity and a USB port for diagnostic purposes only.

Connectivity & Compatibility

The modem connects via a standard coaxial cable (F-type connector) and offers one Gigabit Ethernet (RJ-45) port. It is designed for North American cable ISPs; compatibility with Japanese providers should be verified beforehand. Power is supplied through an external AC adapter. Setup is straightforward: connect the coaxial cable, attach the Ethernet cable to your router or PC, and power on. No configuration software is required—the modem automatically syncs with the provider's network.

Product Info

Released in the early 2010s, the Cisco EPC3212 is now available primarily through second-hand markets or clearance sales. It occupies the entry-to-mid tier in the modem market. While DOCSIS 3.0 is older than the current 3.1 standard, it remains sufficient for many broadband plans up to around 300 Mbps. Warranty varies by seller; used units often come without warranty. Accessories include the AC adapter and a quick-start guide.

Best Use Cases

Budget-conscious users: Ideal for those looking to avoid monthly rental fees by purchasing a used modem. Ensure your ISP supports the model before buying. Users with an existing router: Perfect for separating modem and router functions, allowing you to keep a high-performance router you already own. * Reliability seekers: Cisco's reputation for stable networking hardware extends to this consumer modem, offering dependable connectivity for daily use. However, it cannot match the speed of DOCSIS 3.1 modems.

Product Disclosure (Amazon)

  • Manufacturer: Cisco
  • Seller: P-LAB
  • Fulfilled by: P-LAB
  • ASIN: B008MQEBSG
  • Note: This article covers a manufacturer-made product based on Amazon listing details.