CD = Cup Drawer
comes out like a Drawer and hold a lot of different size Cups
Most "users" who do this are fortunate to not have a CD unit that has a time out function to automatically close it
out of the hundreds of units I handled
I've only ever seen 2 that do this
one 1995 CD-ROM
and a 2008 DVD-ROM
both have a 5 minute time out and then they close
most just remain open though