There are only two or three actual manufactures of SD Cards: SanDisk, Toshiba and Panasonic for certain.
So when you get the card - check it via the Palm Card Info and there you'll see who actually made it.....I doubt that it will be Kensington.
Also, there was an old thread that on the SD side - white card was from Panasonic, light blue was from Toshiba and Dark Blue was SanDisk but that all changed and was found not to be 100% accurate a couple of years back.