The project with the beautiful name iMac G4 M4 is based on a 20-inch device. Apple had presented the "lamp iMac" in 15, 17 and 20-inch versions – with the 20-inch version being the most impressive.

For that, we have to turn to the iMac, which Steve Jobs introduced in ... even if the LCD's thick bezels are undeniably dated ...

“Flickr user Rusty saw his busted G4 iMac, his iPad and had a chocolate-and-peanut butter moment. He removed the iMac’s innards and display. Next he cut and molded some acrylic to accommodate the iPad ...

the entire board is smaller than the stock iMac G4’s hard drive. It still took plenty of cramming, with a multitude of adapters finagled and massaged to fit inside the original housing.