The portable CD-i 350 and 360 players by Philips did not have an integrated Digital Video Cartridge onboard, but they could be upgraded with Digital Video by clicking the CD-i player into the docking station: The docking station had a built-in Digital Video Cartridge. How did that look like? Take a look inside thanks to CD-i member Djamal Benseddik. The original large-sized Digital Video Cartridge, the first version, took up all the space on the bottom:
[Thanks, Djamal Benseddik]