SEGA Dreamcast Seaman Clear Visual Memory Unit VMU DC Japan

What's the deal with VMUs?

SEGA Clear Controllers

DC DREAMCAST VMU memory card PC Data Link Cable Connection move Gamesaves to PC $22.50 - PicClick

Seaman

In great condition.

SEGA Dreamcast Black Visual Memory Unit VMU

SEGA Clear Controllers

GENUINE OFFICIAL SEGA Dreamcast Visual Memory Unit VMU HKT-7000 Green $69.95 - PicClick AU

SEGA DREAMCAST DC Visual Memory Unit VMU HKT 7007 7000 carbon Japan £63.74 - PicClick UK

SEGA Dreamcast Green Visual Memory Unit VMU : Video Games