How fast is the card reader? Noriko April 02, 2021 22:14 Updated Follow A. The Micro and SD card reader has speeds up to 104 Mb/s. Related articles How long is the USB cable on this Hub? Does the SD card readers support UHS-2? What amperage are the USB ports capable of charging devices at? Is it compatible with Windows 10? Is the Slim Multi-Port Adapter compatible with the MacBook 2017 12”? Comments 0 comments Please sign in to leave a comment.