Editing VMU (section)

===Third-party memory cards===
The Nexus Memory Card is a third party version of the Visual Memory Unit that features four times the memory of a stock VMU with 800 blocks (4 [[megabit]] / 512 [[kilobytes]]) but lacks an LCD screen. The card is divided into 4 pages each with 200 blocks, each page can be selected using a button on the top left of the card.<ref>{{cite web | title=Review: 4X Nexus Memory Card w/PC Link | url=http://www.segatech.com/technical/nexus/index.html | access-date=May 31, 2009}}</ref> The Nexus Memory Card is slightly larger than the normal VMU and can be connected to a [[personal computer]] by [[USB]], [[D-subminiature|Parallel]] or [[D-subminiature|Serial]] cable. A 3200 block (16 [[megabit]] / 2 [[megabytes]]) version of the Nexus is also available, but this model has been known to be unstable.{{Citation needed|date=April 2008}}

[[Nyko]] released two memory cards for the Dreamcast: the Jumbo Memory Pak X2 with twice the storage as a VMU, and the Hyperpak with four times the storage. The Hyperpak could also act as a Jump Pak by setting its switch to rumble mode.

The Performance Memory Card was a third-party basic memory card with the same 200 blocks of storage as a VMU.  The Performance Mega Memory Card acted like a 4X Memory Card.  It used a switch on its back to select the desired memory card "page".  Unlike other memory cards however, the Performance model had to be removed from the controller before the "page" could be switched.

In September 2023, following a successful [[Crowdfunding in video games|crowdfunding]] campaign, Dreamware Enterprises released an aftermarket VMU update called the VM2. The VM2 features a backlit screen, a rechargeable battery with [[USB-C]] support, and [[MicroSD]] storage.<ref>{{cite web | url=https://www.theverge.com/2022/9/21/23365268/sega-dreamcast-vmu-virtual-memory-unit-card-2022-fundraiser-indiegogo-console | title=Sega Dreamcast's iconic memory card is making a (Fundraised) comeback | date=September 21, 2022 }}</ref>