[FEATURED IMAGE: Modern modem router combo device with ISP logos]
If you’re renting a modem from your ISP, you’re probably paying $10-15 per month—that’s $120-180 per year for equipment that costs $100-200 to buy. A modem router combo (also called a gateway) replaces both devices with a single unit, simplifying your setup and eliminating rental fees.
Quick answer: The Motorola MG8702 is the best modem router combo for most cable internet users. It supports speeds up to 3.1 Gbps, has WiFi 6, and is compatible with Xfinity, Spectrum, and Cox.
Our Top Picks at a Glance
| Product | Speed | Price Range | Best For |
| Motorola MG8702 | Up to 3.1 Gbps | $250-300 | Best Overall |
| ARRIS SBG8300 | Up to 4 Gbps | $280-350 | Best for Xfinity |
| Netgear C7000 | Up to 960 Mbps | $130-170 | Best Budget |
| Netgear CAX80 | Up to 6 Gbps | $350-450 | Best WiFi 6 |
1. Motorola MG8702 – Best Overall
⭐ EDITOR’S CHOICE
The MG8702 hits the sweet spot between performance, compatibility, and price. It’s DOCSIS 3.1 capable (future-proof for multi-gig plans), includes WiFi 6, and works with all major cable ISPs.
Pros:
- DOCSIS 3.1 supports speeds up to 3.1 Gbps
- WiFi 6 (802.11ax) for better multi-device performance
- 4 gigabit ethernet ports
- Compatible with Xfinity, Spectrum, Cox
Cons:
- Higher price point
- Not compatible with AT&T, Verizon, or CenturyLink (fiber ISPs)
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Should You Get a Combo or Separate Devices?
Modem Router Combo Pros:
- Simpler setup—one device, one power cord
- Takes up less space
- Often cheaper than buying two high-quality devices
Separate Modem + Router Pros:
- More flexibility to upgrade either component
- Can pair with mesh system
- If one fails, you don’t lose everything
My recommendation: A combo is great for most people who want simplicity. Go with separate devices if you have specific router needs (gaming, mesh, advanced features) or a very large home.
Checking ISP Compatibility
Before buying, verify your modem is compatible with your ISP. Most manufacturers list approved ISPs, and ISPs also maintain lists of approved equipment. Important: Fiber ISPs (AT&T Fiber, Verizon Fios, Google Fiber) typically require you to use their equipment.
Frequently Asked Questions
Will buying my own modem really save money?
Yes. At $10-15/month rental fees, a $150-250 modem pays for itself in 12-18 months. After that, it’s pure savings.
What’s the difference between DOCSIS 3.0 and 3.1?
DOCSIS 3.0 supports speeds up to about 1 Gbps. DOCSIS 3.1 supports speeds up to 10 Gbps and is more efficient. If you have or plan to get a gigabit plan, get DOCSIS 3.1.
Do I need to call my ISP to set up my own modem?
Yes. You’ll need to provide the modem’s MAC address so they can authorize it on their network. This is usually a quick call or online chat.
INTERNAL LINKING SUGGESTIONS:
• Router vs Modem (educational)
• Best WiFi Routers 2025
• Best Budget Routers
• How to Setup Router