These printers use the CART 309 cartridge:
Click On a Printer to View it's Cartridges
          Canon LBP 3500
          Canon LBP 3900
          Canon LBP 3950
          HP LaserJet 5200
          HP LaserJet 5200 LE
          HP LaserJet 5200 N
          HP LaserJet 5200 DTN
          HP LaserJet 5200 TN