USB-C to USB-A and HDMI 4K 30Hz adapter QOLTEC in aluminium

Compact QOLTEC adapter that converts a USB‑C port to a USB‑A connector and an HDMI output supporting up to 4K at 30 Hz. The adapter is housed in an aluminium casing that offers a slim profile and improved heat dissipation. It provides simple connectivity for peripherals and external displays from laptops, tablets or phones with USB‑C, enabling presentations, multimedia playback and connection of USB devices without additional hubs.

Advantages

The aluminium housing ensures a durable, lightweight design and helps dissipate heat during extended use. The adapter combines a USB‑A port and an HDMI 4K 30Hz output in a single compact unit, reducing the number of separate adapters or cables required. Plug-and-play operation requires no driver installation on most modern systems, and the USB‑A connector supports standard USB peripherals such as keyboards, mice and flash drives.

Suitable for

• Connecting an external monitor or projector for presentations or video playback
• Attaching USB‑A peripherals to laptops, tablets or phones with USB‑C
• Home office setups that require an additional display and peripheral connection
• Travel use when a compact, combined video and USB adapter is needed

Key specifications

• Output resolution: up to 4K (3840×2160) at 30 Hz via HDMI
• Ports: 1 × USB‑A, 1 × HDMI (female)
• Connector: USB‑C (male) to host device
• Housing: aluminium casing for improved durability and heat dissipation
• Compatibility: supports video output and standard USB peripherals on devices with USB‑C that allow alternate mode or host functions
• Form factor: compact, lightweight adapter suitable for portable use

How to use

Insert the USB‑C connector of the adapter into the USB‑C port of your laptop, tablet or phone. Connect an HDMI cable from the adapter’s HDMI output to an external monitor or projector, and plug USB‑A peripherals into the USB‑A port. On most systems the external display will be detected automatically; use your operating system display settings to select mirror, extend or primary display mode. If a device requires USB host mode or alternate display mode, ensure that the source device supports those functions.

Usage recommendations

For stable video output at 4K 30Hz, use a high‑quality HDMI cable and connect to a display that supports the specified resolution and refresh rate. Avoid forcing the adapter into tightly packed ports and disconnect gently to prolong connector life. If the host device does not detect the display, check USB‑C alternate mode support and update the device firmware or drivers where applicable.