RDC3 Transcend's RDC3 card reader is specifically designed to work with next-generation USB Type-C equipped computers and mobile devices. It is compatible with Android smartphones and tablets, new laptops, MacBooks featuring a Type-C port, and iPad Pro devices 2018 or later. Featuring both an SD card slot and a microSD card slot, Transcend's RDC3 is equipped with the USB 3.2 Gen 1 interface for impressive transfer speeds. Download the complimentary Transcend Elite app to manage the files on your smartphone or tablet. Specifications Appearance Dimensions40.8 mm x 40.8 mm x 10.4 mm (1.61" x 1.61" x 0.41") Weight17 g (0.60 oz) ColorBlack/ Interface USB TypeUSB Type-C/ Connection InterfaceUSB 3.2 Gen 1/ Hardware Card Reader Slot(s)SD /microSD/ Operating Environment Operating Temperature0°C (32°F) ~ 70°C (158°F) NoteSimultaneous insertion of two cards not supported. Performance NoteSpeed may vary due to host hardware, software, usage, and storage capacity. Warranty CertificateCE/FCC/BSMI/KC/RCM/EAC/ WarrantyTwo-year Limited Warranty Compatibility Memory Card SupportedSDHC (UHS-I)/SDXC (UHS-I)/microSDHC (UHS-I)/microSDXC (UHS-I)/