The unique Secure Digital (SD) card was introduced in 1999 as a successor Slots to the MMC format. The format was introduced in August 1999 as Secure Digital by SanDisk, Online slots free Panasonic (then often called Matsushita), and Kioxia (then part of Toshiba). In 1999, SanDisk was approached by Panasonic (then often called Matsushita) and Kioxia (then a part of Toshiba) to develop a new format as a second-generation successor to MMC. At the March 2003 CeBIT trade show, SanDisk introduced and demonstrated the miniSD card format.

They come in three bodily varieties: Free slots online the complete-size SD, the smaller miniSD (now out of date), and the smallest, microSD. The SD Association (SDA) adopted miniSD later that 12 months as a small-kind-factor extension to the SD card normal, supposed primarily to be used in cell phones. Owing to their compact kind issue, SD cards have been broadly adopted in a variety of portable consumer electronics, including digital cameras, camcorders, video recreation consoles, mobile phones, action cameras, and camera drones.

While technically revolutionary, MMC adoption was slow, free slots online and even Nokia was sluggish to integrate support for it into its cell gadgets.

To deal with these challenges, SanDisk partnered with Siemens and Nokia in 1996 to develop a new postage stamp-sized memory card called the MultiMediaCard (MMC). The microSD format was introduced by SanDisk at CeBIT in 2004, initially below the identify T-Flash, later rebranded as TransFlash or Slots TF.

In 1994, SanDisk introduced the CompactFlash (CF) format, one among the first successful flash memory card sorts. In early 2000, the primary business SD playing cards offering 8 MB of storage had been released, Free slots with bigger capability variations following shortly after. SDXC playing cards are formatted with the exFAT file system by default. The PCB of an M.2 module provides a 75-position edge connector; depending on the type of module, sure pin positions are eliminated to present one or more keying notches.

It was designed as a successor to the MultiMediaCard (MMC) format, introducing several enhancements including a digital rights management (DRM) function, a extra durable bodily casing, and a mechanical write-protect switch.