Is there a USB 3 port in my T420

USB port may stop working after you remove or insert a USB device usb 3 slot The 4 PORT USB-C USB HUB synchronizes your devices and allows data transfer as well as peripheral charging It offers a data transfer speed of 5 usb 20 slot The Vantec 3-Port USB with two Type A and one Type C PCIe Host Card is design to offer both USB interfaces for current and newer USB Technology It will

usb slot USB 3 kicks in only when Windows boots and not until then There is no legacy USB 3 enable in the BIOS as far as I know So you may have to