Ideal for customers that want accurate, consistent colour in toner cartridges designed for reliable, cost-effective performance. Get the best results from your HP printing system. HP Smart technology[1] and chemically-grown toner formulas in HP 645A LaserJet Toner Cartridges work with your printer to deliver accurate, consistent colour and reliable, cost-effective performance.Compatible Printers: Canon LBP-2710, HP Color LaserJet 5550 Series, HP Color LaserJet 5500 DN, HP Color LaserJet 5550 N, HP Color LaserJet 5550 DN, HP Color LaserJet 5500 HDN, HP Color LaserJet 5500, HP Color LaserJet 5500 Series, HP Color LaserJet 5500 N, HP Color LaserJet 5550, HP Color LaserJet 5550 HDN, HP Color LaserJet 5550 DTN, HP Color LaserJet 5500 DTN, Canon LBP-2810
