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Compact grey USB-C multiport adapter with Thunderbolt 3, HDMI and USB 3.0 ports

Zell Electronics

Zell Electronics USB-C Multiport Adapter Thunderbolt 3 4K Grey

SKU CH-JYY8-K9XAZ

Connects a USB-C laptop to a 4K display at 30 Hz, adds a USB 3.0 port and passes through USB-C charging, all without drivers

  • Adapter typeUSB to DVI
  • 4K video at 3840×2160 and 30 Hz for crisp external displays
  • Thunderbolt 3 upstream port drives video, data and charging through one cable
  • USB 3.0 port adds high-speed peripheral connectivity
  • USB-C power-delivery port keeps the host laptop charged while in use
  • Driver-free plug-and-play setup works instantly with phones and laptops

What this adapter does and who needs it

This Thunderbolt 3 multiport adapter adds a 4K video output, a USB 3.0 port and a USB-C charging port to a single USB-C connection. It suits laptop or phone users who need an external display and extra peripherals without carrying multiple dongles. Plug-and-play operation means no driver installation is required. Buyers who need more than one video output or legacy ports such as HDMI or Ethernet will not find them here.

Thermals noise and power in daily use

The adapter draws power from the host USB-C port and passes charging power through its own USB-C port to the connected device. No active cooling is present so operation is silent. Power consumption scales with the attached display and peripherals; the unit itself adds negligible heat. Users running sustained high-resolution video should ensure their host can supply sufficient charging current.

Build connectors and mounting practicalities

A short integrated cable connects the adapter to the host, keeping the desk tidy but limiting placement flexibility. The grey plastic housing feels solid for daily transport in a laptop bag. Video connects via a DVI-style output supporting 3840 x 2160 at 30 Hz. The single USB 3.0 Type-A port handles data accessories while the USB-C port is reserved for power delivery pass-through.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $21.99
Pricier than about 63% of the 1,754 comparable items (median $18.99).

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Specifications

Product
Adapter typeUSB to DVI

Questions about this item

How do I connect the Thunderbolt 3 adapter to my laptop and external display, and what step is often missed?

Plug the USB-C connector into a Thunderbolt 3 port on the laptop, then attach the display cable to the adapter's video output; the step often missed is confirming the laptop port carries video-out, not just data or charging.

What maintenance or replacement will the Zell Electronics multiport adapter need over time?

No scheduled maintenance is required; if the USB 3.0 port or video output becomes loose or stops passing a 3840x2160 signal at 30Hz, the whole adapter must be replaced.

What limit appears first when the adapter runs a 4K display continuously?

The video output caps at 3840x2160 resolution and 30Hz refresh, so sustained use cannot exceed that frame rate regardless of the connected monitor.

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