Re: T420s USB 3.0 port not working in ThinkPad: T400 / T500 and newer T series Laptops https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T-series-Laptops/T420s-USB-3-port-not-working/m-p/616589 ThinkPad: T400 / T500 and newer T series Laptops topics Mon, 23 Jan 2012 17:23:44 +0000 tp01_en <![CDATA[ Re: T420s USB 3.0 port not working ]]> https://forums.lenovo.com/topic/findpost/1300/616589/660041 I have the same problem.  I have loaded the drivers and according to Device Mgr, they are loaded and working with no errors.  When I pluggin a 3.0 USB External Drive, it lights up but Windows 7 Enterprize N does not recognize it.  No  beeps, no dings, nothing.  It doesn't show up in "Disk Ma ]]> Mon, 23 Jan 2012 17:23:44 +0000 https://forums.lenovo.com/topic/findpost/1300/616589/660041 rblais