Can you store hard drives or USB drives in a standard fireproof cabinet?

No — and this is a critical distinction. A standard Class 350 fireproof cabinet keeps its interior below 350°F during a fire, which protects paper. But hard drive platters begin failing above 125°F and USB drives fail even lower, meaning your drives would be destroyed in the same fire that leaves your paper files intact. To protect digital media, you need a Class 125-rated data safe or media cabinet, which maintains interior temps below 125°F. FindOfficeFurniture.com stocks UL-rated data-safe products — call 888-719-4960 to specify the right protection level.