For all that poking around the insides of the Blink, I still
don't have a useful shot of the underside. That kind of photography is harder than it looks (I find out each time I try it). And finding photos on this forum isn't exactly easy, either. So, we can start with "the original" pictures from ingineer. I'll quote the first one, and you can follow this link to see the rest of them: viewtopic.php?f=4&t=3279#p77941
You can see that there are two circuit boards behind the display and in front of the power meter. The display is the white thing on the right, and the power meter is the grey box on the left.
The left board (where the blue cable emerges) is an Ecotality board and they put their name on their boards. The board on the right is the processor board. The white cable with the ferrite slug around it is the cable to the LCD.
The best I could do for the processor board itself, was use a photo from the manufacturer's site:
The LCD cable connector is at the upper right, so this should allow you to orient where the board is in the box. It is flipped over, so the parts in the photo face the rear of the box. This puts the SD card connector to the left. When you reach up you will find the card is just about flush with the edge of the board. Operation is mostly by feel. In my unit, there's little or no spring so you have to pull the card out manually. When you insert it again you want to make sure it clicks into place. Normally the spring would push it back out if it didn't engage, but if they are all like mine, you can't rely on the spring. I get the feeling our boards are not identical to the photo. That SD slot looks awfully big. We have micro-SD cards in ours.
As for obtaining a card, you can either image copy another one; find the posted file image and write the image to your card (the above are not for the faint of heart; maybe seek out the local whiz kid and have it him do it); have Blink or your friendly service guy give you one, or ... did the OP say they are now selling
them to us?