I recently was given a few dell 7212 rugged tablets and there has been a bit of confusion on what active pen there is to use. Going off of the "Accessories Brochure" I get the PN: 642-BBBD Which shows useable with the 7212 tablet. But when googling that PN I come up with the PN: 0WFFKT Which I cannot find ANYWHERE on the dell support logs or forums. 

Any help would be appreciated!