a FLIR image of a small USB drive. It's glowing pretty hot, with a marker on a hot point listed as 40.2°C https://digipres.club/system/media_attachments/files/113/263/132/405/804/671/original/c99567c1c65c0d7b.jpeg
It turns out copying 128gb of TV shows to a tiny all-metal USB flash drive heats it up a surprising amount.40.2°C, that's 104°F. Hot to the touch!