Adafruit
Adafruit CH334F Mini 2-Port USB Hub Breakout
· MPN: ADA5999
The Adafruit CH334F Mini 2-Port USB Hub Breakout converts one USB host port into two downstream ports using the CH334F USB 2.1 hub chip. Designed to be compa...
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The Adafruit CH334F Mini 2-Port USB Hub Breakout converts one USB host port into two downstream ports using the CH334F USB 2.1 hub chip. Designed to be compact and embeddable, it fits inside enclosures or existing devices where a standard USB hub would be too bulky.
The upstream connection can use either the 0.1" header pins or the USB-C connector. The two downstream ports are broken out as 4-pin pads for direct soldering or cable connections — no bulky USB connectors are included, keeping the board as small as possible.
Key Features
- CH334F USB 2.1 Hub – Converts 1 upstream port to 2 downstream ports
- Compact Design – Optimised for embedding in enclosures and devices
- Upstream Options – USB-C connector or 0.1" header pins
- Downstream Pads – 2× 4-pin solder pads for direct wiring
- 4 Mounting Holes – For secure installation
- High-Speed USB – Full USB 2.1 hub functionality
Also Available
- CH334F Mini 4-Port USB Hub Breakout – Same design with 4 downstream ports
Ideal For
- Embedded Linux boards needing multiple USB devices
- Converting single-USB peripherals into multi-device hubs
- Custom enclosures and device modifications
- Compact projects where standard USB hubs are too large
Package Contents
- 1× Adafruit CH334F Mini 2-Port USB Hub Breakout (assembled and tested)
- 1× Header strip
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- USB host
- A USB host is the side of a USB connection that controls attached devices, like a computer talking to a keyboard or flash drive. This matters because most microcontroller boards are normally USB devices, so adding USB host support lets them use common USB peripherals.
- USB-C
- USB-C is a small, reversible USB connector that can carry power, data and, on some devices, video over a single cable. The same connector can range from charging only to high-speed data, so the functions a given port actually supports vary.
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