MicroSD is a smaller variant of the SD (Secure Digital) card and is used in certain cell phones, PDAs and smaller, lighter devices. MicroSD cards can be read by regular SD card slots through an adaptor.
Here is a video on the types of memory cards:
|Capacity||Up to 128GB||Up to 2GB|
|Compatibility||SD smaller devices such as a cell phone||Compatible only with SD host devices|
|Types||micro SD||Standard SD, mini SD and micro SD|
|Speed||Slower as compared to SDHC||Slower as compared to SDHC|