I think that one is the same concept, either the CDs are put in on the left side or the right side that you can't see- where you set the CD in notches and then just pull them out to remove. I also remember ones that had sliding shelves/drawers that the CD's sat on and vaguley another style where CD trays rotated out of the device and then rotated back in... I can't seem to find a picture of the latter.
These things had their fare share of problems with the magazines getting stuck or not ejecting from the CD player. It's funny
@bunnspecial mentions preferring the CD changers- my Grand Cherokee's OEM audio had a 1 disc slot load in the dash + 9-10 CD changer in the trunk. Eventually the slot load failed, and then maybe a couple years later the changer failed. At that point the car was nearing 9 or so years old and it was time to move on. I miss that thing.
I will say having a 6-disc in-dash is a lot more convenient than having to deal with CD changers in the trunk or under seats. But fortunately thats a thing of the past now... at least for most of us.