Editing VMU (section)

===4x Memory Card===
[[File:Dreamcast MemoryCard4X.jpg|thumb|right|200px|The official Dreamcast 4x memory card has several lights on its front indicating the currently used storage "page".]]
Sega released an official 4x Memory Card which offered four times the data storage of a standard VMU, with 800 blocks. It was released in Japan on December 14, 2000,<ref name="Dreamcast Memory Card 4X Details">{{cite web | title=Dreamcast Memory Card 4X Details | url=http://www.gamespot.com/news/2642229.html | access-date=June 7, 2009}}</ref> as "Memory Card 4X", and in the US as "4x Memory Card".  A button is used to select one of four "pages", and a series of four orange LED on the card indicates which of these is currently in use.  Not all games are compatible, so Sega released a list of incompatible games.<ref>{{cite web | title=DC Memory Card 4X Compatibility List | url=http://www.gamespot.com/news/2646823.html | access-date=June 7, 2009}}</ref>

A limited edition ''[[Phantasy Star Online]]'' 4x Memory Card was also released in Japan to coincide with the game's release. It was coloured blue and featured the ''Phantasy Star Online'' logo printed onto the casing.<ref name="Dreamcast Memory Card 4X Details"/>

The 4x Memory Card did not make it to retail in Europe, despite a planned release (along with the [[Dreamcast Broadband Adapter]] which was also unreleased in Europe) due to the Dreamcast's unforeseeably short lifespan – although unofficial third party 4x Memory Cards were released in Europe.