![]() I said earlier that the QE5541 is one of six new safes from Sentry, but that's an oversimplification. ![]() (I have my own solution to that problem, which I hope to discuss with Sentry at some point.) ![]() I'd like to see Sentry offer a model that can support one or more full-size (3.5") drives, but in that situation, heating could be a problem a fire safe has to be well-insulated, so even the ten watts or so produced by a 3.5" hard drive might be too much. I was able to use a bus-powered hub to hook up several flash drives just for testing purposes, but there's little practical value to that. You'd need a hub in the safe, but bus-powered USB hubs don't provide enough power for USB hard drives anyway. There's another consequence of this issue: there isn't enough power coming into the safe to run more than one hard drive. But Sentry provides high-quality cables and connectors, and I think it should be reliable as long as you're using the provided cables and a good hard drive. The final voltage was only barely in spec with the Passport and significantly lower with those older drives. I tested the power inside the safe with the hard drive running using a special USB cable I built for testing purposes some years ago. The resistance of all that extra wire and the extra connectors causes a voltage drop that could interfere with proper operation of the hard drive. On the Sentry safe, there are effectively three cables: one outside the safe, one inside the safe, and one buried in the door of the safe to bring the USB connection through. That may sound more like a solution than a problem, but the USB specification also requires that power-hungry USB peripherals such as hard drives be connected to a USB port through just one cable. The problem is that USB ports provide +5V DC power and USB-powered hard drives require +5V DC power.
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