Don't Forget Your eMMC Reader! This eMMC comes preinstalled with an OS. However, if you wish to back up this eMMC to your computer or write a new OS image to it, you'll need a way to hook it up to another computer with one of the two following solutions: eMMC to USB adapter, or 64GB and smaller applications only: eMMC to microSD adapter and microSD reader/writer KEY FEATURES OS Preinstalled Plug and play Supports HS400 Speeds Not all sizes will work with the recommended eMMC Reader/Writer, make sure to read the description of each eMMC adapter. eMMC storage performanceSequential read and write speed is over 150MB/s and 125MB/s respectively.4K random access performance is reasonably fast too. io zone test result are as follows. Click image to enlarge *WiKi : https://wiki.odroid.com/accessory/emmc/emmc *Schematics : http://dn.odroid.com/eMMCModule/ Warranty is valid for two weeks, starting upon date of receipt. * You need eMMC Module Reader or USB3.0 eMMC Module Writer to flash or update the OS of the eMMC Module.(sold separately) Transcend USB multi-slot SD Card reader in the below picture is not included. ** USB3.0 eMMC Module Writer : Works with ODROID Orange, Red and Blue eMMC modules (It is not compatible with the Black eMMC Modules)