This article covers ARRIS SURFboard SB6183 DOCSIS 3.0 Cable Modem.

Overview

The ARRIS SURFboard SB6183 is a DOCSIS 3.0 cable modem designed for internet plans up to 400Mbps. It supports 16 downstream and 4 upstream channels, providing reliable and stable broadband connectivity. This particular unit is a Certified Refurbished product, offering like-new performance at a fraction of the retail price.
One of the biggest advantages of the SB6183 is eliminating monthly rental fees from your cable provider. By purchasing this modem, you can save a significant amount of money over time, especially if you plan to keep it for several years.

Connectivity & Compatibility

The modem features a single Gigabit Ethernet port for connecting to a router or directly to a PC. It is compatible with major US cable internet providers such as Cox, Optimum, Spectrum, and Xfinity. If you are in Japan, you must check with your local cable operator to confirm DOCSIS 3.0 support.
Important compatibility notes: This modem does not include VoIP (phone) functionality, so separate equipment is needed for telephone service. It is also a pure modem, meaning you will need an external router to create a Wi-Fi network.

Product Info

The ARRIS SURFboard SB6183 is a well-known, reliable modem from a leading manufacturer. It is positioned as an entry-level to mid-range solution for cable internet users who need speeds up to 400Mbps. The Certified Refurbished model offers a cost-effective alternative to buying new.
In the box you will find the modem, power adapter, Ethernet cable, and quick start guide. Warranty varies by seller but typical refurbished units include 90 days to 1 year coverage.
Specs include DOCSIS 3.0 with 16×4 channel bonding, dimensions of approximately 5.0 x 2.1 x 5.2 inches (12.7 x 5.4 x 13.3 cm), and a compact design that fits easily on a desk or shelf.

Best Use Cases

This modem is ideal for:

  • Users who want to stop paying monthly rental fees to their cable provider. The upfront cost pays for itself within a year compared to typical rental fees.
  • Households with internet plans up to 400Mbps, suitable for streaming, browsing, video calls, and online gaming at moderate settings.
  • Customers of Cox, Optimum, Spectrum, or Xfinity, as these providers have verified compatibility.
    It is not recommended for:
  • Users with gigabit or faster internet plans, as the SB6183 tops out at 400Mbps.
  • Those who need a modem with VoIP or integrated Wi-Fi router functionality.
  • Users who prefer a brand-new unit with full manufacturer warranty, though refurbished units often offer substantial savings.

Product Disclosure (Amazon)

  • Manufacturer: ARRIS
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B01ERK1JLM
  • Note: This article covers a manufacturer-made product based on Amazon listing details.