Ok, learned this sort of the hard way today… I picked up the brand spanking new HTC One M8 yesterday. So far it’s a fantastic phone. I wanted to add a 32 GB MicroSD card, since it wonderfully supports such expansion. Beware! There’s a little tray that comes out when you use the paper clip in the little hole. Put the MicroSD card in that tray! I thought it was simply a placeholder at first, so I slyly proceeded to simply insert the card into the hole. Whoops!
If you fall into the same trap, it’s easy to get the MicroSD card out. First, you might as well finish the formatting steps – it’s in there anyway. When that’s done, use the paperclip to release the MicroSD card from the tray. Yes, I know it won’t come out all the way. After releasing it via the eject hole, use the side of the paperclip to gently pull the card out from the right side a little bit. Once you can see the plastic of the card, pull it out the rest of the way with your fingers. Problem solved!
Good luck!
-Auri
Auri's Blog 
Lol thank you for this! I just did the same thing!
Whew, well it’s consoling to hear I wasn’t the only one derpy enough to think that little frame was just there for looks. Yep, probably gonna read the instructions next time, haha.
Going to try this right now, thanks!
How did you remove the ad card when you placed it in without the tray?!
Sd*
As I recall, the tray helped pull it out by using gentle pressure. It’s been a while… a little bit of tapping may be in order as well.