Tripp Lite U428F-20M-D3 – USB-A to USB-C Plenum Fiber AOC 20m

Product Overview

The Tripp Lite U428F-20M-D3 is a 20-meter (66 ft.) plenum-rated active optical USB cable designed for commercial AV installations, surveillance infrastructure, and data center environments requiring long-distance USB 3.2 Gen 2 connectivity. This USB-A to USB-C fiber AOC cable delivers 10 Gbps data transfer speeds across distances that far exceed the limits of standard copper USB cables. Its CMP-rated plenum jacket makes it suitable for in-wall and in-ceiling horizontal premise applications, meeting fire and smoke standards required in commercial buildings. For AV integrators and IT professionals specifying USB over long runs, the U428F-20M-D3 eliminates the need for active extenders or repeaters.

Product Description

The U428F-20M-D3 uses fiber optic construction to carry USB 3.2 Gen 2 signals at 10 Gbps over 20 meters—a distance unachievable with passive copper USB cables. The cable connects a USB-A host port (computer, server, workstation) to a USB-C peripheral such as an external hard drive, surveillance camera, or NVR located in another room or across a ceiling run. Because fiber is immune to electromagnetic interference, this cable performs reliably in environments with high electrical noise, including broadcast studios, control rooms, and industrial facilities.

The slim, flexible cable construction makes routing through conduit, around corners, and through tight spaces considerably easier than rigid copper alternatives. The cable draws operating power directly from the connected host device, requiring no external power supply. Installation requires attention to directionality—the Host and Device labels on each connector must be matched to the correct ports. The U428F-20M-D3 is plug-and-play compatible with Windows, macOS, and Linux operating systems. Note that this cable is not backward compatible with USB 3.2 Gen 1, USB 2.0, or USB 1.1 devices—it operates exclusively at USB 3.2 Gen 2 speeds.

The CMP plenum-rated outer jacket carries low smoke and low flame characteristics, satisfying the fire code requirements for horizontal runs in drop ceilings, air-handling ducts, and open-air plenums in commercial buildings. Gold- and nickel-plated connectors on both ends resist corrosion and ensure consistent signal integrity over the product's service life. Tripp Lite backs this cable with a 3-year limited warranty.

Key Features

• USB 3.2 Gen 2 at 10 Gbps — Delivers full USB 3.2 Gen 2 bandwidth over a 20-meter fiber run, supporting fast transfers of large files from external drives and high-bandwidth surveillance feeds.
• 20-Meter Fiber Optic Reach — Extends USB connectivity up to 66 feet, enabling peripheral placement in separate rooms, ceiling-mounted camera locations, or centralized storage areas far from the host workstation.
• CMP Plenum-Rated Jacket — Low-smoke, low-flame CMP outer jacket complies with fire code requirements for horizontal in-wall and in-ceiling installations in commercial buildings.
• No External Power Required — The active optical circuit draws power from the USB host port, eliminating the need for an additional power supply at the cable or peripheral end.
• Slim and Flexible Construction — Fiber construction produces a thinner, more pliable cable than copper equivalents, simplifying installation through conduit, around corners, and in crowded cable pathways.
• EMI Immunity — Fiber optic signal transmission is inherently immune to electromagnetic and radio-frequency interference, making this cable reliable in electrically noisy commercial and industrial environments.
• USB-A to USB-C Connectivity — Bridges legacy USB-A host ports to modern USB-C peripherals without an adapter, preserving existing infrastructure while supporting current-generation devices.
• Gold and Nickel-Plated Connectors — Corrosion-resistant plating on both connectors ensures low-resistance contact and long-term signal reliability in commercial installations.
• Broad OS Compatibility — Plug-and-play operation on Windows, macOS, and Linux without driver installation.
• 3-Year Limited Warranty — Tripp Lite provides a 3-year limited warranty covering manufacturing defects.

Typical Applications

• Long-distance USB connection of NVR or surveillance cameras to a control room workstation
• In-wall or in-ceiling USB cable runs in commercial office buildings, broadcast facilities, and corporate AV systems
• Data center environments connecting USB-C storage or server peripherals across rack rows or adjacent rooms
• Conference room AV installations where USB peripherals must be routed through plenum ceiling spaces
• Industrial automation and control environments requiring EMI-resistant USB cabling

Technical Specifications

Frequently Asked Questions

Is this cable backward compatible with USB 2.0 or USB 3.2 Gen 1 devices?

No. The U428F-20M-D3 operates exclusively at USB 3.2 Gen 2 speeds. It is not compatible with USB 3.2 Gen 1, USB 2.0, or USB 1.1 devices. Both the host port and the peripheral must support USB 3.2 Gen 2 for the cable to function.

Does this cable require an external power supply?

No external power supply is required under normal operating conditions. The active optical circuit draws power from the USB host port. However, if the peripheral device is not detected, Tripp Lite recommends providing external power to the device to ensure reliable data transmission.

Can I install this cable in a drop ceiling or air-handling duct?

Yes. The U428F-20M-D3 carries a CMP plenum rating, which qualifies it for horizontal runs in drop ceilings, air-handling plenums, and open-air ducts in commercial buildings. It meets the applicable fire and smoke propagation standards for these installation environments.

Does the cable need to be installed in a specific direction?

Yes. The connectors are labeled Host and Device. The Host connector must be plugged into the USB-A port on the computer or workstation, and the Device connector must be plugged into the USB-C peripheral. Reversing the connection will prevent the cable from functioning.

What types of peripherals can I connect with this cable?

The U428F-20M-D3 is designed for data-only applications, including external hard drives, SSDs, NVR units, surveillance cameras, and other USB-C storage or data devices. It does not support USB Power Delivery or video output signals.

What operating systems are supported?

The cable is plug-and-play compatible with Windows, macOS, and Linux. No driver installation is required on supported operating systems.

How does fiber compare to copper for long USB runs in commercial AV installations?

Copper USB cables are limited to approximately 3–5 meters at USB 3.2 Gen 2 speeds. Fiber AOC cables like the U428F-20M-D3 extend that reach to 20 meters without signal degradation, without active repeaters, and with the added benefit of EMI immunity—important in AV and broadcast environments with significant electromagnetic interference.