I could not find a way to fit my Electron Analog HDMI board in my PS2 slim 75k shell securely and without a slight bulge in the console shell. This box allows you to keep the OEM shell, and the network plug on your PS2 slim 75k (other models not tested but should work) while installing the Electron Analog HDMI.

I Followed Macho Nachos Install video but used power from the USB 2 port instead. No issues with the installation and picture is perfect.

This will require you to cut and file a 16.2mm x 6mm hole next to the network plug on the bottom shell of the ps2 slim. A slight cut and file may be necessary for the top shell to bring them together. 

This will slightly reduce the ps2 DVD lid clearance but I had no issues loading and unloading games from the disc bay. Try to get the box to sit as low as possible in the bottom ps2 slim shell (6mm at least)