This article covers ARRIS サーフボード SB6190 32x8 DOCSIS 3.0 ケーブルモデム 1.4Gbps ダウンロード速度 262 アップロード速度 ホワイト (非小売パッケージ) (リニューアル).

Overview

The ARRIS SURFboard SB6190 is a DOCSIS 3.0 cable modem featuring 32 downstream and 8 upstream bonded channels, supporting download speeds up to 1.4Gbps. It is designed for use with major US cable internet providers such as Xfinity, Spectrum, and Cox. This particular unit is sold through the Renewed program, meaning it is a refurbished product in non-retail packaging. This modem does not include a built-in router, so you will need a separate router connected via its single Gigabit Ethernet port to share the internet connection with multiple devices. The SURFboard Central app simplifies setup directly from your smartphone, making the initial configuration straightforward even for less technical users.

Connectivity & Compatibility

Interface: 1× Gigabit Ethernet port Protocols: IPv4, IPv6 Compatible Providers: Comcast Xfinity, Spectrum (Time Warner, Charter, Brighthouse), Cox, and other major US cable ISPs Note: Compatibility with Japanese cable TV services (e.g., J:COM) is not guaranteed. Always verify with your provider before purchasing if you intend to use it outside the US.

Product Info

Original Release: 2016 Price Range: Approximately ¥10,000 on Renewed (as of September 2026) Warranty: Renewed standard 90-day warranty Accessories: Modem unit, power adapter, Ethernet cable (contents may vary due to non-retail packaging) * Market Position: Entry to mid-range. The SB6190 offers solid channel bonding for DOCSIS 3.0 and is ideal for plans up to 600Mbps. However, it lacks DOCSIS 3.1 support, so it is not suitable for gigabit-plus speed tiers.

Best Use Cases

US cable internet subscribers: If you are on a 600Mbps or lower plan with Xfinity, Spectrum, or Cox, this modem can replace your rental unit and save you monthly fees. It is a cost-effective solution for standard broadband needs. Budget-conscious buyers: The Renewed price is often less than half that of a new unit, making it an excellent choice if you want to minimize upfront costs. Be prepared for possible cosmetic blemishes typical of refurbished goods. Users who prefer separate modem/router setups: If you like having the flexibility to choose your own router, the SB6190 is a reliable modem-only option. It pairs well with any standard router and avoids the limitations of all-in-one gateway devices. Not recommended for: Users with gigabit or faster internet plans, or those who need advanced DOCSIS 3.1 features like OFDM and lower latency. In those cases, a newer DOCSIS 3.1 modem would be a better investment.

Things to Consider

This modem is officially supported only by major US cable providers. Japanese users must check with their local ISP for compatibility before purchasing. As an Renewed product, the packaging may be plain, and the unit may show signs of prior use. The 90-day warranty provides some peace of mind, but it is not equivalent to a brand-new unit. While the SB6190 supports up to 1.4Gbps downstream theoretically, real-world performance depends on your ISP plan and network conditions. For plans exceeding 600Mbps, a DOCSIS 3.1 modem is strongly recommended. No built-in router or Wi-Fi functionality. You must supply your own router to create a home network. ## FAQ
Q: Can I use this modem with J:COM in Japan? A: Officially, the SB6190 is designed for US cable providers. While it follows the DOCSIS 3.0 standard, Japanese cable operators like J:COM use different frequency bands and authentication methods, so compatibility is not guaranteed. For reliable service in Japan, choose a modem sold domestically. Q: What is the maximum speed of this modem? A: With 32 downstream and 8 upstream channels, the theoretical maximum is 1.4Gbps download and 262Mbps upload. In practice, it performs best with plans up to 600Mbps. Higher speeds may be possible but depend heavily on your ISP and line quality. Q: Is the Renewed version reliable? A: Renewed products are inspected, cleaned, and tested by qualified vendors. The 90-day warranty covers defects, so the risk is relatively low. However, expect possible cosmetic wear and simpler packaging compared to a brand-new retail unit.

Product Disclosure (Amazon)

  • Manufacturer: Amazon Renewed
  • Seller: Masin Bleu(メゾンブリュー）
  • Fulfilled by: Masin Bleu(メゾンブリュー）
  • ASIN: B09J966JY9
  • Note: This article covers a manufacturer-made product based on Amazon listing details.