I use it to store malware removal tools, so it's used on many infected PCs. The switch keeps debris out of the flash drive. You can use a registry entry to enable/disable writing to disk, but not before it is inserted into the PC, which may be too late to protect it. The switch is a great invention! Update about a year later: I bought 2 of these drives and they both still work perfectly. Great job kangaroo, they are worth your money!
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