1. USB 3.1 data transmission speed is 5Gbps, allows you to read 2 memory cards and USB 3.1/2.0 simultaneously, supports a maximum of 128GB SD / TF card, super lightweight and compact size for portability. Fast download files from your USB storage or SD cards to mobile phone, tablet, laptop, or computer, used for uploading and sharing photos and videos quickly with your friends 2. Compatible with SD, SDHC, SDXC, -SD, -SDHC, -SDXC cards. Compatible with USB-C devices such as 2015/2016/2017, Pro 2017, iPad 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 other 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 3. No need to download apps, plug and play. You can quickly transfer FAT32 format data files from your SD/TF card to compatible Type C devices, release storage space anytime 4. USB C smartphones or other USB C devices must support OTG function 5. Device with USB 2.0 would only run at 480Mbps. Make sure the format of your SD card is FAT32, if not, please backup the files on your SD card and format it into FAT32, as most smartphones cannot recognize files in NTFS Specification: Name: 3 in 1 Type C Card Reader OTG HUB Adapter Interface: USB/TF/SD Color: white Material: ABS Size: 50 x 40 x 12.7mm Package Contents: 1 x Type-C converter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.