I used this to make an old laptop 4K capable; my third monitor was a 42-inch 4K TV. It worked perfectly. Now I have a new laptop with a docking station that doesn't need it. That's why I'm selling this device in excellent condition.

The driver software on the original CD is outdated and will not be included. The driver must be downloaded from the StarTech website.
The following information is also available there:

USB 3.0 to HDMI Adapter, 4K 30Hz UHD, DisplayLink Certified, USB to HDMI Display Adapter, USB to HDMI Adapter for Mac & Windows
Connect an additional HDMI monitor with USB 3.0 technology and 4K playback capability to your PC
Product ID: USB32HD4K
PERFORMANCE: This USB 3.2 to HDMI dongle lets you connect your laptop/desktop computer to an HDMI monitor, TV, or projector via a USB-A port; Supports up to 4K 30Hz (UHD); 5.1ch audio (via HDMI); HDCP 2.2; USB bus powered; Compatible with 1080p

INCREASE PRODUCTIVITY: This USB-A to HDMI adapter lets you connect an extended display (2 total, including the laptop screen) via a single USB-A port; Supports ultrawide monitors up to 3440x1440; Provides extended display on Apple M1/M2/M3 MacBooks

COMPATIBILITY: Works with Windows, macOS 10.14+, ChromeOS, and Linux; Ensures compatibility with any USB-A laptop, ultrabook, PC, or compact system. Works even if 4K output is not natively supported by your laptop/video card.

NOTE: This adapter is not compatible with macOS versions 10.13.4 through 10.13.6. We recommend updating to 10.14 or later for DisplayLink compatibility. A driver is required for macOS. Auto-installs drivers on Windows and ChromeOS.

IT PRO'S PREFERRED CHOICE: Designed and built for IT professionals, this USB Type-A to HDMI adapter dongle is supported for two years, including lifetime free multilingual technical support (24/5).