Laser Tek Services® HP 940XL series (C4906AN, C4907AN, C4908AN, C4909AN) replacement ink cartridges are compatible with the following printer models: HP OfficeJet Pro 8000, 8500, 8500 wireless, 8500a, 8500a plus, 8500A Premium. Laser Tek Services® Replacement Ink cartridges offer an excellent choice over expensive brand name Ink cartridges for your printer. They are professionally manufactured to produce the best quality prints for your HP Printer. All of our replacement cartridges have a Fresh supply of ink for premium performance giving you quality,clean and clear prints page after page. Our ink cartridges also have a new indicator chip to communicate with your printer properly and to accurately track your ink levels, and as always, all of our cartridges come with a 100% Satisfaction Guarantee! This Package contains 1 Black C4906AN, 1 Cyan C4906AN, 1 Magenta C4908AN, and 1 Yellow C4909AN Replacement Ink Cartridges. With an approximate page yield of 2,200 pages for black and 1,400 pages for color @ 5% page coverage.