Resolution auto-scaling: support 4K resolution to be automaticallyreduced to 1080P (other resolution downgrades are not supported). It has built-in automatic equalization and amplification functions to ensure optimal transmission without losing video/audio quality.
eBay
HDMI-compatible Splitter 1x4 Full HD 4K Audio Video Splitter 1 in 4 out HDMI Splitter Amplifier Adapter For HDTV DVD PS3 Xbox
Aliexpress UK
3 in 1 hdmi switch splitter. 4k 60hz. never used
eBay
NIERBO 8K Bi-Directional HDMI 2.1 Switch Splitter 2 in 1 Out Ultra HD 4K@120Hz 8K@60Hz 48Gbps Aluminum HDMI Hub for PS5 Xbox
Aliexpress UK
1 x HDMI 3 Port 4K HD video switcher. Input port: 3 x HDMI. Output port: 1 x HDMI. Note: The product does not support HDCP and HDR. Color: Black. Power consumption: 0.2W.
eBay
4K 1x8 HDMI Splitter 1 in 8 Out HDMI Video Distributor Converter Multi Screen Display for PS4 Xbox Camera Laptop To TV Monitor
Aliexpress UK
This HDMI switcher can. Upgrade 4K HDMI Switch Box. THIS SWITCHER is for 3 signal hosts to be displayed on. This HDMI Switch 4K can't switch automatically. HDMI devices to a TV with very limited HDMI port?.
eBay
Navceker 4K 60Hz HDMI Extender Splitter 1x4 3D HDMI RJ45 Extender 60m Ethernet Transmission Over CAT5e/6/7 4 Channel 1 Loop Out
Aliexpress UK
Solving your multiple HDMI devices issue. Easy to install and use, plug and play. Supports all common audio formats. Several devices can be connected in series. Just press the "switch" button on this product for 5 seconds to turn ON/ OFF the automatic switch function.
eBay
Bi-Direction Switch 8K 60Hz HDMI Splitter 1x2 HDMI Switch 1 in 2 out Video Distributor Splitter HD 1080P Dual Display for Laptop
Aliexpress UK
HDMI switcher with 3 inputs and 1 output. 4K is supported with 50cm cable length.
eBay
SCART to HDMI Converter Cable Video Audio Converter Adapter Scart in HDMI Out Suport 720P/1080P Switch for HDTV DVD
Aliexpress UK
Compatible with HDMI2.1 and high-definition TV with HDCP2.3. 1x 3 In 1 Out HDMI Switcher. One-Button Switch & LED Indicator: HDMI splitter 3 in 1 out Easy to set up and use, no driver and power needed, just plug and play.
eBay
SCART to HDMI Converter with Cable 1080P Scart in HDMI Out HD 720P/1080P Switch Video Audio Converter Adapter for HDTV
Aliexpress UK
Easy to Use: HDMI Splitter 2 in 1 out is installed easily, just plug and play and no external power and driver are required, just connect HDMI devices to using! 4K HDMI Switch: HDMI splitter supports ultra-high picture resolution 4K@60Hz, 2K@120Hz and 1080P.
eBay
SCART To HDMI-Compatible Converter with Cable Scart In HDMI Out HD 1080P Converter Adapter for HDTV DVD Monitor Projector
Aliexpress UK