I use this panel pass-through, and it works well: "NEUTRIK - USB A/B Pass Thru Black D-Type". I have a usb stick with a flashing LED to indicate it is accessing.

I would be nice if there were a menu item, perhaps below the one where you set it to download IGC files, where you could end recording and then download IGC files to the USB stick without cycling power. I have to turn off everything, then boot my 7007 (provides power to the Core) in order to get the IGC file out.

I am happy that I can transfer declarations from my Dell Streak/XC Soar via IOIO to the Core - very handy.