Just saw that topic popping on the WAN show, let me correct some information False, they have defective thunderbolt firmware. Yes, they had firmware issues, no hardware issues. And yes, Lenovo in a lot of cases (after what I saw on Lenovo forum), fixed a lot of them by replacing hardware, but only because: - Their support team is really bad according my personal experience (I contact them about thunderbolt issues and ask me to update my SSD firmware ...) - They are bad to fix their own software bug. If you have a Lenovo and encounter thunderbolt issues, the last firmware correct them. If you are not able to update your thunderbolt firmware, due to their software bug, I've mitigated that issue: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Thunderbolt-on-T470-does-not-work-after-BIOS-update-cannot/m-p/4575822#M138683 祝你们新年快乐 (づ ●─● )づ !