1. USB 3.1 data transmission spped is 5Gbps, allows you to read 2 memory cards and USB 3.1/2.0 simultaneously, supports a maximum of 128 Gb SD / TF card, super light weight and compact size for you to carry around. Fast download the files from your USB storage or SD cards to the mobile phone, pad, laptop, or computer, used for upload and share the photos and videos quickly with your friends2. Compatible with SD, SDHC, SDXC, -SD, -SDHC, -SDXC cards. Compatible with USB-C devices like 2015/2016/2017, / Pro 2017, Pro, Pro 2017/2016, Galaxy S10 /S9/S8/S8 Plus / S9 Plus /Note 8/Note 9, / Pro,Chromebook /Pixelbook, Surface Book, Zenbook, XPS13/15, and more USB-C devices. 1 standard USB 3.1 port (backward compatible with USB 2.0/ 1.1) for flash drive, U disk, hard drive, keyboard, mouse, printer etc3. No need to download Apps, plug and play .You can quickly transfer FAT32 format data files from your SD/TF card to the compatible Type C devices, release the space of the storage anytime4. USB C smart phones or other USB C devices must be support OTG function5. Device with USB 2.0 would only run at 480Mbps. Make the form of your SD card is FAT32, if not, please backup the files on your SD card and format it into FAT32, all the smartphone on the market can not recognize the files in NTFSspecification:Name:3 in 1 Type C Card Reader OTG HUB AdapterInterface: USB/TF/SDColour: whiteMaterial: ABSSize: 50 x 40 x 12.7mmPackage Contents:1 x Type- c converterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.