The usb port restriction is absolutely true for laptops, but colo desktops probably do not have this restriction, or just a more lax restriction. Also, its not true for all laptops of the company, but usb access does require explicit permissions and a new-issue laptop, so they do have a list of people who have riskier laptops, and may need to be issued a different travel laptop vs engineering laptop.

The laptop's epoxied ports likely prevent distracted traveling workers from having their laptops hacked with usb-keys inserted when they aren't looking.