It looks like CastleMania Games is now taking pre-orders on the citrus3000psi-designed kit that allows you to install a digital output port, in place of the analog port on your model 101 GameCube: https://bit.ly/dol101digitalkit
This kit will require you to remove the analog output “SNES style” jack and mount this copy of the digital-out port in its place. If analog audio and composite video are needed, you’ll also have to drill a hole for a 3.5mm jack, however if you’re using something like a Carby HDMI, it’s not necessary to make any cuts to your console.
This mod is a great choice for someone who has a GameCube without the digital port, but wants the versatility of a plug&play digital solution. Please see the original post for more details: https://www.retrorgb.com/digital-solution-for-model-101-gamecubes.html
CastleMania is going to be selling the DOL-101 Digital conversion kits from now on. People who purchased from me your units will be going out in the next day or so. https://t.co/SocPVhlwnf
— Dan Kunz (@citrus3000psi) April 29, 2020