Nvidia’s chief security officer has published a blog post insisting that its GPUs “do not and should not have kill switches and backdoors.” It comes amid pressure from both sides of the Pacific, with some US lawmakers pushing Nvidia to grant the government backdoors to AI chips, while Chinese officials have alleged that they already exist.

The statement comes as both US and Chinese authorities probe the lucrative global AI chip business, which NVIDIA dominates.

The export restrictions on the H20 chip are expected to have a major impact on NVIDIA's sales. The company has warned that these curbs will cut its revenue by $8 billion in the July quarter. In April, NVIDIA had predicted a $5.5 billion charge due to these restrictions but later revised it down by $1 billion as some materials could be reused.