Cr301B is a SuperSpeed USB SD and MicroSD card reader for fast data access and management of your memory cards. It's the perfect solution for fast accessing your SD or MicroSD cards, you can easily transfer files from memory cards into your computer through a USB port. The driverless plug & play makes for easy installation and no driver software is needed. Compliant with USB 3.0 (Usb 3.2 Gen 1) specifications that guarantee fast access with SuperSpeed data transfer rates up to 5Gbps. It also supports high density Sdxc memory cards, and ultra high speed Uhsi memory cards. The buyer is responsible for the return postage costs. Please check everything carefully after receiving the parcel, any the damage except dead on arrival would not be covered if it's your fault.