How long is the USB cable on this Hub? Noriko April 02, 2021 22:14 Updated Follow A. The USB cable is approximately 4". It is not detachable cable. Related articles How fast is the card reader? What amperage are the USB ports capable of charging devices at? Does the SD card readers support UHS-2? If you are experiencing any HDMI display, Ethernet connectivity, USB, or card reader issues, first complete an SMC reset. Do both HDMI ports support 4K@60Hz? Comments 0 comments Please sign in to leave a comment.