TP-Link

TP-Link Cable Modem Only DOCSIS 3.0 TC-7620

4.3 (875 reviews)

Cut your ISP's modem rental fee and unlock DOCSIS 3.0 speeds up to 680Mbps with 16-channel bonding.

$89.99*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The TP-Link TC-7620 is a DOCSIS 3.0 cable modem built around a 16×4 channel bonding architecture — 16 downstream and 4 upstream channels bonded to deliver theoretical maximum throughput of 680Mbps down and 143Mbps up. In practical terms, that spec means the modem will never be the bottleneck on any cable plan currently offered up to the 300Mbps tier it's certified for. The downstream frequency range spans 88 to 1002 MHz, and the upstream operates from 5 to 42 MHz — standard DOCSIS 3.0 parameters. The single Gigabit Ethernet port correctly matches the LAN interface to the modem's maximum throughput, so there's no 100Mbps port quietly capping your connection.

The business case for purchasing this modem is straightforward arithmetic. Most cable ISPs charge $10–15/month for a rented modem; the TC-7620 offsets that recurring cost within a year or two of typical use. Setup follows the standard ISP provisioning workflow — you call or log in to your provider, give them the modem's MAC address, and they activate it on their network. No software installation, no drivers, no ongoing management interface required for basic operation. This is the right modem for a home network running a separate router, a residential subscriber on a major cable ISP, and anyone who wants the rental fee line item removed from their bill permanently.

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

DOCSIS Version
3.0
Downstream Channels
16
Upstream Channels
4
Max Download Speed
Up to 680Mbps
Max Upload Speed
Up to 143Mbps
Downstream Frequency
88–1002 MHz
Upstream Frequency
5–42 MHz
Channel Width
96 MHz (16 channels) / 6 MHz (single channel)
Modulation
64 QAM / 256 QAM
LAN Interface
1× Gigabit Ethernet (RJ45)
WAN Interface
1× F-Connector (coaxial)
ISP Compatibility
Xfinity, Spectrum, Cox, Suddenlink, Mediacom, WOW (up to 300Mbps plans)
OS Compatibility
Windows, Mac OS, UNIX, Linux
Warranty
2 years

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.

Frequently Asked Questions

ISP certifications cover Xfinity, Spectrum, Cox, Suddenlink, Mediacom, and WOW for plans up to 300Mbps. The 16×4 channel bonding architecture theoretically handles up to 680Mbps downstream, but plan compatibility is the practical ceiling — confirm your specific plan tier with your ISP before purchasing.
No. The TC-7620 is a cable modem only — it provides the coax-to-Ethernet translation and hands off a single wired connection via its Gigabit Ethernet port. You'll need a separate router if you want Wi-Fi or multiple wired devices on the network.
DOCSIS 2.0 used a single downstream channel, capping speeds far below what most modern plans offer. The TC-7620's 16 bonded downstream channels aggregate bandwidth across multiple frequencies — the result is up to 16× the theoretical downstream throughput of a DOCSIS 2.0 device, and a more resilient connection when individual channels experience interference.
The TC-7620 bonds 4 upstream channels, delivering up to 143Mbps upload. For most residential use cases — video calls, cloud backups, streaming to external services — this is more than sufficient. Power users on symmetrical or high-upload plans should verify whether their ISP's upstream provisioning matches this ceiling.
No dedicated software is required. Once provisioned by your ISP (a process done over the phone or online), the modem operates transparently. It's compatible with Windows, Mac, UNIX, and Linux — the OS only needs to be able to use DHCP, which all modern systems handle natively.