GJX specification: Name:3 in 1 Type C Card Reader OTG HUB Adapter Interface: USB/TF/SD Colour: white Material: ABS Size: 50 x 40 x 12.7mm Package Contents: 1 x Type- c converter 2. Compatible with , SDHC, SDXC, Micro-, Micro-SDHC, Micro-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, P20/P20 Pro,Chromebook /Pixelbook, 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 etc 4. USB C smart phones or other USB C devices must be support OTG function 5. Device with USB 2.0 would only run at 480Mbps. Make sure the form of your card is FAT32, if not, please backup the files on your card and format it into FAT32, all the smartphone on the market can not recognize the files in NTFS 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 / TF card, super light weight and compact size to carry around. Fast download the files from your USB storage or cards to the mobile phone, pad, laptop, or computer, used for upload and share the photos and videos quickly with your friends 3. No need to download Apps, plug and play .You can quickly transfer FAT32 format data files from your /TF card to the compatible Type C devices, release the space of the storage anytime