Please assist SanDisk Cruzer Switch 16gb not detectable

I recently bought 2 16gb SanDisk Cruzer Switch for my trip to Tibet.  After transferring all the photos from my sd card to this usb drive via my mac, I verified the photos on the usb before formatting my sd card.  Now, a few weeks later, this one specific cruzer usb isn’t even registering in Finder, System Information, or Disk Utility.  I believe its not the actual usb connection of the Mac because other USB drives detect just fine.  I’m in a bit of a panic as alot of memorable photos are only on this usb card.

I’m trying to get my hands on a pc to test it on a different OS.  I’m running 10.7.  Can anyone please assist?

It is much appreciated.

Here’s hoping you have better luck with a different machine.

In the future remember to BACK UP important files.  Back up to the pc’s hard drive, a USB hard drive or a second USB flash drive.  Drives wear our, burn out and USB drives get lost.

I was at elevation so I couldn’t load any photos on external harddrive.  Can you hypothesize what exactly has happened to the USB which accepted the loaded files and I even verified after that they were loaded on the USB stick?  Now it doesn’t even detect?  Any suggestions to remedy?

It sounds like it’s dead, how could be a wide range of reasons.  The contacts oxidized, metalic dust shorted out the contacts, stress on the plug broke something inside, a power surge from the machine fried a chip, low power burned out a chip,

Take it to a local repair shop that you trust and see what they suggest.