
TP-Link Cable Modem Only DOCSIS 3.0 TC-7620
Cut your ISP's modem rental fee and unlock DOCSIS 3.0 speeds up to 680Mbps with 16-channel bonding.
*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.
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Overview
Key Features
Eliminate Rental Fee: Eliminate your cable modem monthly rental fee
Cable Modem Only: You will also need a router to enable Wi-Fi. Channel Width : 96MHz(16 channels) / 6MHz (single channel). Modulation : 64 QAM / 256 QAM
Faster Speed: DOCSIS 3.0 Cable Modem provides 16X faster download speed than DOCSIS 2.0 for an ultra-fast performance; Channel bonding of up to 16 downstream and 4 upstream channels, provide data rates up to 680Mbps for download and 143Mbps for upload
ISP CERTIFIED: Great for Cable Internet plans up to 300Mbps with XFINITY from Comcast, Spectrum (Including Charter, Time Warner Cable, and Bright House Networks), Cox, Suddenlink, Mediacom, and WOW
Industry Leading Support: 2-year warranty and free 24/7 technical support; J.D. Power Ranked TP-Link "Highest in Customer Satisfaction for Wireless Routers in 2017"
Specifications
Pros & Cons
👍 Pros
- 16×4 DOCSIS 3.0 channel bonding supports download speeds up to 680Mbps — headroom well beyond most residential cable plans up to 300Mbps.
- A single Gigabit Ethernet port matches the modem's maximum throughput to the LAN side, preventing the port from becoming the bottleneck.
- ISP certification across Xfinity, Spectrum, Cox, Suddenlink, Mediacom, and WOW removes the compatibility guesswork for the majority of U.S. cable subscribers.
- Eliminates monthly modem rental fees that typically run $10–15/month — the hardware pays for itself within a few billing cycles.
- No proprietary software or drivers required — provisioning is handled by the ISP and the modem operates as a standard network device.
👎 Cons
- Modem-only design means buyers who assumed Wi-Fi was included will need a separate router purchase — the total system cost is higher than the modem price alone suggests.
- ISP certification is capped at 300Mbps plans — subscribers on gigabit or 400Mbps+ tiers will need a higher-tier modem.
- Upstream channel bonding is 4×, limiting upload to 143Mbps — a real constraint for users on high-upload workflows like live streaming or frequent large file transfers.
- Single Ethernet port offers no flexibility for direct multi-device wired connections without adding a switch.
- Frequency range tops out at 1002 MHz downstream, which may limit compatibility as ISPs migrate to newer DOCSIS 3.1 or extended spectrum deployments.