The sandisk extreme 900 portable ssd is a safe secure and reliable drive for all of your large files and videos boasting impressive speeds of up to 850mbsec the ssd solid state drive is silent when in use the lack of internal moving parts means it is also damage resistant it is shock and vibration proof and unaffected by temperature extremes your files are protected by the sandisk secureaccess encryption software if youre working with large photo libraries or ultra hd 4k videos