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Zoom Technologies Inc. > 
Item#: N82E16825387007

Zoom 5345 DOCSIS 3.0 8 x 4 343 Mbps Cable Modem Up to 343 Mbps Downstream, up to 123 Mbps Upstream RJ-45 10/100/1000 Mbps Ethernet, with Auto-MDI/MDIX DOCSIS 3.0


This means the product was tested and repaired as required to meet the standards of the refurbisher, which may or may not be the original manufacturer. Any exceptions to the condition of the item outside the manufacturer’s information should be provided in the listing, up to and including warranty details.

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  • Up to 343 Mbps Downstream, up to 123 Mbps Upstream
  • RJ-45 10/100/1000 Mbps Ethernet, with Auto-MDI/MDIX
  • F type female 75 Ohm (standard coaxial connector)
  • DOCSIS 3.0

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
general information

Zoom 5345 DOCSIS 3.0 8x4 Cable Modem

Provides high-speed Internet. Connects to your computer or router.

general information

Zoom 5345 DOCSIS 3.0 is a high-speed cable modem, certified for money-saving, own-your-modem programs by Comcast XFINITY, Time Warner Cable, and more. It’s backwards compatible with DOCSIS 2.0 and 1.1 standards, making it easy to install the modem in nearly any network configuration.

This cable modem features eight downstream and four upstream channels, providing efficient, reliable internet access. And the downstream channels support a maximum data rate of 343 Mbps while the upstream channels support a maximum data rate of 123 Mbps, thus ensuring maximum performance. It also comes with support for both IPv4 and IPv6 Internet addressing to keep your equipment current. Five status-reporting LEDs allow easy status monitoring.

Key Features

general information

Save Money

Owning this cable modem eliminates modem rental charges (typically $8 to $10 every month) from Comcast XFINITY, Time Warner Cable, Cox, Bright House, and other service providers.

general information

Fast Internet

This 8x4 cable modem has eight downstream channels, four more than 4x4 cable modems. 8x4 gives higher average download speeds than 4x4, even for service speeds below this cable modem/router’s top speed of 343 Mbps.

Full-Band Capture Digital Tuning lets your cable service provider deliver faster, more reliable Internet.

general information

Plugs into Your Computer or Router

This cable modem provides Internet access for a computer or anything connected to your router.

Additional Features


CableLabs Certified

Zoom 5345 DOCSIS 3.0 is certified by CableLabs to support the latest DOCSIS 3.0 standard plus DOCSIS 2.0 and 1.1 for use with older cable systems. It’s also certified by Comcast, Time Warner Cable, Cox, Bright House, and more.


Gigabit Ethernet Port

Zoom 5345 DOCSIS 3.0 features one Gigabit Ethernet port for fast 10/100/1000 Base-T Ethernet connectivity and expanded compatibility.


Supports IPv6 and IPv4

This cable modem supports IPv4 and IPv6 standards for powerful, flexible network addressing.


The Perfect Choice

With its easy installation, high speed, and extensively tested compatibility, it is the perfect choice for almost any cable modem user.


general information

On the back of the modem you will find one female coaxial connector and one Gigabit Ethernet port.

On the front panel, five status LED indicators make it easy to monitor the LAN, online, upstream, downstream, and power aspects of your network.

The Zoom 5345 DOCSIS 3.0 measures 5.7” x 4.1” x 1.6” in dimension (product images not shown actual size).

Learn more about the Zoom Technologies Inc. 5345




Cable Modem
RJ-45 10/100/1000 Mbps Ethernet, with Auto-MDI/MDIX
Cable Interface
F type female 75 Ohm (standard coaxial connector)
Broadcom BCM3383D
Max Transmission Rate
Up to 343 Mbps Downstream, up to 123 Mbps Upstream


Data rate: Up to 343 Mbps (8 channels), Up to 43 Mbps (single channel)
Frequency: 88 to 1002 MHz (edge to edge)
Modulation: 64 or 256 QAM
Operating level range: -15 to +15 dBmV

Data rate: Up to 123 Mbps (4 channels), Up to 31 Mbps (single channel)
Frequency: 5 to 42 MHz (edge to edge)
Modulation: QPSK, 8QAM, 16QAM, 32QAM, 64QAM,128QAM, 256QAM
Operating level range: A-TDMA: +8 to +54 dBmV (32QAM, 64QAM) / +8 to +58 dBmV (QPSK); S-CDMA: +8 to +53 dBmV (all modulations)

Security: DOCSIS 3.0 Security (BPI+, EAE, SSD)

Network protocols: IPv4, IPv6, TCP, UDP, ARP, ICMP, DHCP, FTP, TFTP, SNMP, HTTP
Application protocol: SNMP v1 / v2 / v3
DHCP client: Automatically retrieves IP and DNS server address from DHCP server at ISP
ToD (RF868): ToD support for local and MSO time synchronization
TFTP client: TFTP support for cable modem configuration file download
Management: Web-based management interface utility

Status indicators: Ethernet link, Connection Status, Upstream link, Downstream link, Power

Power adapter: Level V energy-saving, switching power supply with 12 Volt DC, 1 Amp output. NEMA 5-15 (North American style) plug is standard. Other plugs are available

Operating temperature: 32 to 104 degree Fahrenheit

Approvals: FCC part 15B, Bureau Veritas for IEC 60950-1:2005 (2nd Ed.) safety, CE, CableLabs

System requirements:
The cable modem must be connected to a cable modem service that uses any of the DOCSIS standards – 3.0, 2.0, 1.1
An available Ethernet port on a Windows, Mac, or Linux computer, or an available WAN Ethernet port on a wired or wireless router

Package contents: Cable modem, power cube, Ethernet cable, Quick Start flyer
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 90 days
  • Limited Warranty period (labor): 90 days
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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