FOR PS2 AND PS1: backwards-compatible with the original PSX/PSOne models, as well as PS 2 RESOLUTION UPSCALER: PS 2 HDMI cable ups the original 240p and 480i display on PS1 and PS2...

In replacing the serial port, the HDMI mod is unintrusive. Plans are afoot to restore serial port functionality if you really need it. Needless to say, the output quality of a modded PlayStation console...

The PS1HDMI will be an internal install compatible with 500X through 700X series PlayStation consoles. The installation includes removing the serial port, in order to mount the HDMI port, making...

DCDigital HDMI board and GDEMU ODE installed for the Sega Dreamcast console! Play your games in crispy 1080p HD display while using a SD card loader to access your favorite DC titles! 12V regulator removed as well. pic.twitter.com/OrncPqusdu

imagine someone playing ps4 on a 4:3 crt with a hdmi to composite and composite to AR adapters
Zuko 

Acer just announced its first gaming monitor with HDMI 2.1. Perfect for the PS5 or Xbox Series X. It’s a 28-inch 4K monitor with an IPS display and a 144Hz refresh rate https://www.theverge.com/2021/1/7/22216979/acer-gaming-monitors-nitro-predator-xv28-xb27-xb32-ces-2021-may-price-specs-hdmi-21 …pic.twitter.com/E3z8MCSHqc