For Coco: Tested and confirmed working. SEGA Mega Drive 2, Mega CD 2 console, cartridges, and CD.

Tested for operation, but cannot guarantee functionality, so please consider it a junk item.

The main unit has many surface scratches, but it can be played without any operational issues.
The eject button's return is slightly poor.
One cartridge, Super Monaco GP, has operational issues and would freeze midway through.
Other software and CDs played without problems.

13 Cartridges
Cases included. All do not include instruction manuals.

Backup RAM Cartridge
Out Run 2019
Ecco the Dolphin
Chibi Maruko-chan: Waku Waku Shopping
Osomatsu-kun: Hachamecha Gekijou
Sonic the Hedgehog
Sonic the Hedgehog 2
Sonic Spinball
Puyo Puyo
I Love Donald Duck: Gurugia Ou no Hihou
Super H.O.
Dynamite
Super Monaco GP (with operational issues)

5 CDs
Cases included. Instruction manuals included.

Switch (Sega Mouse compatible, operation confirmed)
Quiz Scramble Special
File Fight
After Burner III
Ranma 1/2: Byakuran Aika