page_title: Memory Stick
section_title: Memory Stick Duo
hierarchical_section_title: Memory Stick / Formats and form factors / Memory Stick Duo
caption_attribution_description: Memory Stick Duo Adaptor and Memory Stick PRO Duo. Photo by uploader.
context_page_description: Memory Stick is a removable flash memory card format, originally launched by Sony in late 1998. In addition to the original Memory Stick, this family includes the Memory Stick PRO, a revision that allows greater maximum storage capacity and faster file transfer speeds; Memory Stick Duo, a small-form-factor version of the Memory Stick; the even smaller Memory Stick Micro, and the Memory Stick PRO-HG, a high speed variant of the PRO to be used in high-definition video and still cameras.
  As a proprietary format, Sony exclusively used Memory Stick on its products in the 2000s such as Cyber-shot digital cameras, Handycam digital camcorders, WEGA and Bravia TV sets, VAIO PCs and the PlayStation Portable handheld game console, with the format being licensed to a few other companies early in its lifetime. With increasing popularity of SD card, in 2010 Sony started to support the SD card format, which was seen as a Sony loss in the memory-card format war. Despite this, Sony continued to support Memory Stick on certain devices.
context_section_description: The Memory Stick Duo was developed in response to Sony's need for a smaller flash memory card for pocket-sized digital cameras, cell phones and the PlayStation Portable. It is slightly smaller than the competing Secure Digital (SD) format and roughly two thirds the length of the standard Memory Stick form factor, but costs more. Memory Stick Duos are available with the same features as the larger standard Memory Stick, available with and without high speed mode, and with and without MagicGate support. The Memory Stick PRO Duo has replaced the Memory Stick Duo due to its 128 MB size limitation, but has kept the same form factor as the Duo.
  A simple adapter allows Memory Stick Duo to be used in devices designed to accept the original Memory Stick form factor.
caption: Memory Stick Duo Adaptor and Memory Stick PRO Duo
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