This article covers Arris サーフボード SB8200 DOCSIS 3.1 ケーブルモデム.

Overview

The ARRIS SURFboard SB8200 is a DOCSIS 3.1 cable modem designed for high-speed cable internet. It supports download speeds up to 5 Gbps and uploads up to 262 Mbps, with two Gigabit Ethernet ports and 32×8 channel bonding. As a standalone modem (no router or Wi-Fi), it offers flexibility to pair with any third-party router. For users currently renting a modem from their ISP, buying the SB8200 can eliminate monthly fees and pay for itself within a couple of years.

Connectivity & Compatibility

The rear panel includes one coaxial connector for your cable line and two Gigabit Ethernet ports for connecting a router or directly to a computer. The SB8200 is fully DOCSIS 3.1 compliant and backward compatible with DOCSIS 3.0 networks. It supports IPv4 and IPv6. ISP compatibility is critical: it officially works with Cox, Spectrum, and Xfinity in the US. In Japan, check with your cable provider for compatibility before purchase. This is a modem-only device; you'll need a separate router for Wi-Fi or multiple wired devices. VoIP telephone service is also not supported directly.

Product Info

Launched several years ago, the SB8200 remains a relevant choice for DOCSIS 3.1 service. It is priced around ¥31,464 on Japan (as of August 2026), with a 1-year limited warranty from ARRIS. In the market, it occupies a solid mid-to-high tier position, offering robust performance without the extra cost of integrated Wi-Fi. Competitors include the Motorola MB8600 and Netgear CM1000, but the SB8200's simplicity and reliability keep it popular among enthusiasts.

Best Use Cases

  • Cable internet subscribers on gigabit plans: The SB8200 can fully utilize your plan's speed. Buying it often pays for itself within 1-2 years compared to renting. Not for fiber or DSL. - Users who want a separate modem for a custom router setup: Ideal for pairing with high-end routers or mesh systems. Gives full control over your home network. Less suitable for those who prefer an all-in-one device. - Gamers and streamers needing low latency: The modem's channel bonding and DOCSIS 3.1 error correction reduce jitter and maintain throughput. Ensure quality coaxial cables and proper placement.

Product Disclosure (Amazon)

  • Manufacturer: ARRIS
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B08L1C631X
  • Note: This article covers a manufacturer-made product based on Amazon listing details.