SD cards exist in three different form factors these days. There is the standard SD card designed in 1999, then we got the Mini-SD card which made its debut in 2003 and the Micro-SD card which appeared in 2004. These three form factors have been with us all this time and even though their design remained the same, a lot has changed in terms of performance and reliability. Most modern laptops, smartphones, gaming consoles and other devices feature an SD card slot of one shape or the other. There are also countless adapters and SD card reader devices which you can use as an add-on
