Note the pictures are of a cheap cable to show the design of the cable only. Huawei P20. Huawei P20 Pro. USB 3.1 Type C input and HDMI output. Huawei Mate 10 / 10 Pro. Huawei Mate 20 / 20 Pro. No adapter, no converter needed.
eBay
USB C To HDMI-Compatible Adapter Cable Type C 4K USB 3.1 HDTV Converter Cable For Projector PC
Aliexpress UK
Turns an available USB 3.0 port into a HDMI output with high resolution up to full HD (1920 1080). - Add a secondary HDMI and extend your desktop without taking apart your computer to install a new video card.
eBay
USB-C To HDMI-compatible 3 in 1 Cable Converter for Samsung Huawei iPad Mac NS USB 3.1 Type C To HD
Aliexpress UK
Mirror or expand your screen content with the high-resolution graphic images on your HDTV, monitor, or projector at up to 4K resolution at 30Hz. The HDMI adapter ensures productive work and a clear visual experience.
eBay
3 IN 1 USB C to HDMI-Compatible Adapter USB 3.1 Hub Type C Charging Converter for Samsung S23 Ultra
Aliexpress UK
HDMI Bi-Directional Splitter Switch 1 In to 2 Out OR 2 Input 1 Output HDTV PC UK. 4K Resolution - Supports resolutions up to 4k @ 30hz (3840x2160), compatible with 1080P/720P. For iPhone to Type USB C Adapter Converter Male Charging Cable Adapter.
eBay
3 IN 1 USB C to HDMI-Compatible Adapter USB 3.1 Hub Type C Charging Converter for Samsung S23 Ultra
Aliexpress UK
2M USB C To HDMI Cable 4K 30Hz USB C 3.1 Adapter For Ipad/Samsung/HUAWEI. 4K resolution - supports up to 4K@30hz The resolution of (3840x2160) is compatible with 1080P/720P. USB 2.0 A Male 1 to 2 Dual USB Female Data Hub Power Adapter Y Splitter Cable UK.
eBay
3 IN 1 USB C to HDMI-Compatible Adapter USB 3.1 Hub Type C Charging Converter for Samsung S23 Ultra
Aliexpress UK
Connect to a 4K HDTV or HD display to expand your desktop etc. Portable Digital AV Multiport Adapter allows you to connect your HDTV, monitor, computer, tablet, projector and other HDMI display with HDMI port to your USB C Devices.
eBay
USB C To HDMI Adapter 4K 8K 60HZ Cable USB Type-C to DP miniDP 1.4 Converter VGA HDTV Displayport
Aliexpress UK
It features USB 3.0 and 2.0 ports, HDMI connectivity, and a USB Type-C interface. It is compatible with a range of laptop models and provides a convenient way to expand connectivity options. > High quality.
eBay
3 IN 1 USB C to HDMI-Compatible Adapter USB 3.1 Hub Type C Charging Converter for Samsung S23 Ultra
Aliexpress UK
Turns an available USB 3.0 port into a HDMI output with high resolution up to full HD (1920 1080). - Add a secondary HDMI and extend your desktop without taking apart your computer to install a new video card.
eBay
3 in 1 USB C to HDMI-Compatible Adapter USB 3.1 Hub Type-C Charging Converter for Samsung S23 Ultra
Aliexpress UK