Our station has purchased the P2 adapters so we can use micro P2 in our cameras, thereby eliminating the need for a P2 reader in the field with the laptops since the laptops SD card slot will read the micro P2 cards. We have a couple of 64GB Micro P2 cards. The micro P2 cards are essentially a SDXC UHS-II card. What I want to know is will the less expensive cards such as the SanDisk Pro Extreme SDXC UHS-II cards work instead of the much more expensive Micro P2 cards? I found a notice on Panasonic's site saying some cards will work but recording can't be guaranteed. We purchased a Lexmar 64GB SDXC UHS-II card to experiment but it doesn't work. When you try to format the card in the camera it gives a "Warning: Can Not Format" message. I'm ordering a SanDisk card to try that. In the mean time, have any of you used a card other than Micro P2 that's worked? The company wants to equip all photogs with 4 cards. The 64GB P2 cards are $300 each where as the SanDisk 64GB cards are $130.