Don't forget to enter settings and change the screen resolution from 480i to 480p. If you switch the Wii to 480p mode, they may work in an HDMI compatible manner. Output resolution: 720p / 1080p (whether the high resolution can be achieved depends on the input signal).
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HD 1080P AV to HDMI Adpater RCA to HDMI-compatible Composite Converter HDMI to AV RCA Adapter For N64 Wii PS1/2/3 Xbox One SNES
Aliexpress UK
The WII TO HDMI converter can output HDMI signals for direct connection to monitors/TVs/projectors! wii to hdmi HD converter: 1m. 1x wii to hdmi HD converter (1m). It uses a standard HDMI high-definition interface to connect to a TV or monitor, with a clarity, brightness and sharpness that is unmatched by previous analogue interfaces!
eBay
Mini HDMI cable 4K 60Hz HDMI 2.0 Mini HDMI to HDMI cable adapter Mini HDMI male to HDMI female cable Coupler Adapter
Aliexpress UK
Realistic video/audio effects! 1 WII to HDTV converter. High definition 720p or 1080p high definition output. All digital HDMI format video and audio output with no transmission loss! Support all WII display modes (NTSC,PAL 480i,480p,576i).
eBay
for Wii to HDMI-compatible Converter Adapter Full HD 1080P 720P 480P for Wii to HDTV Male to Male for PC HDTV Monitor Display
Aliexpress UK
The WII TO HDMI converter can output HDMI signals for direct connection to monitors/TVs/projectors! wii to hdmi HD converter: 1m. 1x wii to hdmi HD converter (1m). It uses a standard HDMI high-definition interface to connect to a TV or monitor, with a clarity, brightness and sharpness that is unmatched by previous analogue interfaces!
eBay
XIKCU 1080P Full HD Wii To HDMI-compatible Converter Adapter Wii 2 3.5mm Jack Audio Video Cable 720P For PC HDTV Monitor Display
Aliexpress UK
For Wii to HDMI-compatible converter: convert for Wii input to HDMI-compatible HD output to provide more realistic HD visual effects. Support for Wii all display modes (NTSC 480i, PAL 576i) Note: for Wii Mini is not supported,male to male ,do need buy wii/hdmi cable.
eBay
Wii To HDMI-Compatible Converter 1080P Full HD Adapter Connector 3.5mm Video Audio for PC HDTV Monitor Wii 2HDMI-Compatible
Aliexpress UK
Realistic video/audio effects! 1 WII to HDTV converter. High definition 720p or 1080p high definition output. All digital HDMI format video and audio output with no transmission loss! Support all WII display modes (NTSC,PAL 480i,480p,576i).
eBay
LccKaa HD 1080P Wii To HDMI-compatible Converter WII To HD Adapter with 3.5mm Audio for PC HDTV Monitor Display with HD Cable
Aliexpress UK
Don't forget to enter settings and change the screen resolution from 480i to 480p. If you switch the Wii to 480p mode, they may work in an HDMI compatible manner. Output interface: HDMI. Power cord x1.
eBay
Full HD 1080P WII to HDMI-Compatible Converter WII to HDMIWii 2 HDTV Converter Adapter 3.5mm Audio for PC HDTV Monitor Display
Aliexpress UK
This is a Wii to HDMI converter / adapter. It allows you to connect a Nintendo Wii (or potentially other composite video sources) via HDMI to a modern HDMI display (TV, monitor, projector). An HDMI cable (shown in photos).
eBay
Wii to HDMI Converter Adapter Video Cable 1080P Male to Male Wii2HDMI Converter Plug and Play for Wii to HDTV Display
Aliexpress UK