I always use one USB flash disk on my MacBook Air (OS X 10.10.3), but I lost it recently. I need a way to view when the last date & time the USB device was connected to the computer.

  • It is unclear exactly what you problem you are facing Jun 12, 2016 at 11:44
  • Thanks for your reply. I want to find the time record in system which the USB flash disk was pulled in/out. Jun 12, 2016 at 12:15
  • What OSX version do you have Jun 13, 2016 at 22:50
  • Did my answer work? Jun 14, 2016 at 3:17

2 Answers 2


Unfortunately peripheral connections are simply something that isn't logged by your Mac. Just think - why would it need to keep a written log of when a USB drive is plugged in?

Hope you end up finding it again!


Apple's USB Prober should do the trick

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