Product name:Micro SD Card Adapter For RampsProduct Features· 3D Printers Ramps MicroSD Card Adapter Supporting Standard Size RAMPS 1.4· Ever wanted to run from the SD card to your RepRap? Here is your chance! This allows          you to print on Ramps from MicroSD.With Ramps1.3 and later, it is easy to connect to        the Ramps on.Product Description3D Printers Ramps MicroSD Card Adapter Supporting Standard Size RAMPS 1.4 Brief introduction Ever wanted to run from the SD card to your RepRap? Here is your chance! This allows you to print on Ramps from MicroSD.With Ramps1.3 and later, it is easy to connect to the Ramps on. Feature SPI mode Supply voltage: 4.55.5V Up to 50 MB / sec data transfer rate Located directly on a RAMPS Also be used with other microcontrollers