The Puck fire warning nobody wants to lead with
This review has to open with a safety flag rather than a feature list because the story broke while this controller was still being tested. On May 22, 2026, Ars Technica and GamingOnLinux reported that at least one owner's Steam Controller Puck — the magnetic dongle/charger combination that ships in the box — nearly started a fire. Both the Puck and the controller contain magnets. Metallic objects placed nearby can be attracted to the charging surface, and if the wrong piece of metal bridges the charging contacts, you get a short circuit with the associated heat.
Valve has added a warning to the product documentation instructing users to remove metallic objects near the charging surface before establishing a connection. This is a real caveat, not marketing paranoia. Keys, coins, small tools, and anything ferrous within a few inches of the Puck are hazards. If you leave the Puck on a wooden desk with nothing metal near it, you are almost certainly fine. If you dock the Puck on a metal desk or near a key hook, don't. This section leads because the safety information should not be buried at the bottom of a review.