Motorola B12
Score: 83/100
ZyXEL C3510XZ
Score: 78/100Rankings
The Motorola B12 is a compact DOCSIS 3.1 cable modem delivering up to 2.5 Gbps downstream with QoS and LED indicators, perfect for multi-gigabit internet plans. Its single Ethernet port and lack of built-in Wi-Fi mean you'll need an external router for multiple devices. Best suited for users who already own a high-performance router and want a future-proof modem.
The Zyxel C3510XZ is a fiber-only Wi-Fi 6 gateway offering high wireless capacity and four Gigabit LAN ports. Its limitations include lack of DSL/cable support, no multi-gigabit Ethernet, and minimal USB capability. Best suited for CenturyLink or other fiber subscribers needing an all-in-one solution.
| Attribute | | |
|---|---|---|
2,500 Mbpsbest | 940 Mbps | |
800 Mbpsbest | — | |
1 ports | 4 portsbest | |
— | 1 portsbest | |
| ↓ lower better | — | 27 Wbest |
| ↓ lower better | — | 0.99 kgbest |
2 yearsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(1) | ||
Maximum Download Speed (Mbps) | 2500 Mbps | 940 Mbps |
Ports(1) | ||
Ethernet Ports (count) (ports) | 1 ports | 4 ports |
Build & Design(2) | ||
Dimensions (HxWxD) (mm) | 5.5 x 3.5 x 3.5 inches mm | 245x175x60 mm mm |
Form Factor | compact | gateway |
General(1) | ||
Provider Compatibility | Comcast Xfinity, Cox (up to 2 Gbps), Spectrum, RCN, Astound | CenturyLink |
Products in the top-left offer the best value (high score, low price).
Professional reviewers and retail editors consistently praise the Motorola B12 for its fast DOCSIS 3.1 performance, simple plug-and-play installation, and cost-saving potential compared to ISP-rented equipment. They note its future-proof design, broad ISP certification, and QoS capabilities as strong selling points for gamers and streaming enthusiasts.
Everyday consumers echo the professional sentiment, highlighting the modem's easy setup, reliable high-speed connectivity, and compatibility with their existing routers. The limited user feedback shows overwhelmingly positive experiences with few complaints, mainly centered on the lack of built-in Wi-Fi.
Professional reviews are absent from the available sources; vendor and reseller descriptions emphasize the gateway's Wi-Fi 6 performance, integrated design, and suitability for high-device households, while noting that technician installation is required for activation.
User feedback is minimal, with listings showing few or no reviews; the limited comments focus on the product's specifications rather than experiential praise or complaints.
“easy to set up! Works well.”
