The E-films MiniDrive is a half-size SD card adapter built to turn a MacBook Pro's SD slot into permanent, expandable storage using MicroSD cards, aimed at editors who want extra space without an external drive taking up a port. Half-Size SD Adapter: Sits flush in a MacBook Pro's SD slot and can stay mounted during transport without damage. Supports 64GB and 128GB MicroSD Cards: Infinitely expandable by swapping in a new MicroSD card for each project. No Drivers Required: Recognized immediately as another drive on macOS and Windows once inserted. Time Machine Compatible: Can be used as a dedicated, always-on Time Machine backup destination. Minimal Power Draw: Uses less than 10 minutes of battery power over 8 hours of use, with no cables required. Mac Compatibility OS X 10.8 through Mavericks+ Windows Compatibility All Versions Waterproof / ESD Proof Yes / Yes Operating Temp 0°C to 70°C Storage Temp -40°C to 85°C Insertions 10,000 minimum Dust Proof Yes Warranty 1 Year Dimensions 24 x 21.5 x 2.1mm