Lenovo said that USB-C issues affecting some of its ThinkPad notebooks were caused by problems with Thunderbolt firmware, according to Notebookcheck , which reported Saturday that Lenovo first identified the problem in August 2019.
The report was part of Notebookcheck's recent investigation into Thunderbolt controller failures in recent ThinkPad models. The outlet said that some models, such as the ThinkPad T470 or T480, experienced these problems after they "ran fine for years." Now









