Hiearcool UCN3286 7-in-1 USB-C Hub with 4K HDMI and 100W PD

Some USB-C setups need only a display connection, others also need ports for accessories and memory cards. The Hiearcool UCN3286 combines those connections in a compact aluminum hub for work, study, or travel. Its HDMI output supports up to 4K at 30Hz, and video requires a host USB-C port with DisplayPort Alt Mode.

Pros

The hub brings together display output, two USB-A 3.0 ports, SD and microSD card readers, and USB-C power pass-through. That mix can be useful when a laptop has limited built-in connections: for example, connect a compatible monitor, a flash drive, and a card while keeping the laptop connected to power. The aluminum enclosure and 1.8-ounce weight also suit a setup that moves between a desk and a bag.

Buyers often praise its plug-and-play setup, compact size, and usefulness with MacBook Pro and Air models. Feedback on connectivity is mixed, however: some describe stable connections, while others report interruptions. These are customer impressions, not a guarantee of how it will perform with a particular device or setup.

Quick overview

• Type: 7-in-1 USB-C hub
• Display: HDMI up to 3840×2160 at 30Hz, supports 1080p at 60Hz
• USB: Two USB-A 3.0 ports, up to 5Gbps and 5V/0.9A each
• Card readers: SD and microSD
• Power: USB-C PD pass-through up to 100W, the laptop receives less than the input due to hub consumption
• Material: Aluminum
• Dimensions: 4.17 × 1.4 × 0.34 inches
• Weight: 1.8 ounces
• Setup: Plug and play, no drivers required
• Warranty: 2 years

Everyday use

For a travel or study setup, this hub can consolidate common connections in one accessory: an external display, USB-A peripherals, and SD or microSD cards. It is suited to everyday file access and peripheral use rather than a buyer who specifically needs a higher HDMI refresh rate, the listed 4K mode is 30Hz. USB data transfer is rated up to 5Gbps, and the USB-A ports are specified at up to 5V/0.9A each.

Compatibility depends on the host device, not just the connector shape. HDMI output requires USB-C DisplayPort Alt Mode, and the product notes that not all phones and tablets support video out. Power delivery also depends on the charger, cable, and connected device, so 100W is the maximum input rating rather than a promise that every laptop receives 100W.

Questions before you buy

Will it display video from a phone or tablet? Only if that device’s USB-C port supports video output through DisplayPort Alt Mode. The connector alone does not establish compatibility.

What display resolution and refresh rate does HDMI support? The listed maximum is 3840×2160 at 30Hz, 1080p at 60Hz is also supported.

Does the hub deliver 100W to a laptop? It supports up to 100W USB-C PD input, but the laptop receives less after the hub’s power use. The actual rate also depends on the charger, cable, and device.

Final verdict

It suits you if you want a single, light USB-C hub for a compatible computer or tablet, with display output, USB-A, card readers, and power pass-through in one aluminum enclosure. It might not be a great match if your priority is 4K display output above 30Hz, or if your device lacks USB-C video support. For a straightforward everyday setup, the useful question is whether your host device supports the video and charging features you plan to use.