ziprint remanufactured ink cartridge replacement for hp 901 xl 901xl use with officejet 4500 j4680 j4500 j4580 j4550 j4540, 4500 g510n g510a g510g (black tri-color, 2-pack) ziprint <b>package includes:</b><br><br> 1 x 901xl black ink cartridge<br><br> 1 x 901xl tri-color ink cartridge<br><br><br> <b>page yield:</b><br><br> each black cartridge will yield approximately 700 pages<br><br> each tri-color cartridge will yield approximately500 pages<br><br><br> <b>compatible printers:</b><br><br> officejet 4500 wireless all in-one printer series<br><br> officejet 4500 g510a<br><br> officejet 4500 g510g<br><br> officejet 4500 g510n<br><br> officejet j4500/j4600 all-in-one printer series<br><br> officejet j4500, officejet j4524<br><br> officejet j4540, officejet j4550<br><br> officejet j4580, officejet j4624<br><br> officejet j4640, officejet j4660<br><br> officejet j4680, officejet j4680c<br><br><br> <b>please follow the guidelines below:</b><br><br> step 1: gently remove the black or transparent protective cover before installing.<br><br> step 2: tear off the plastic tape.<br><br> step 3: put the cartridge into printer in the correct slot.<br><br> step 4: click "yes" or "continue" if you receive a "you have not installed genuine cartridges" message.<br><br> <b>warm tips : </b><br><br> a. do not touch the chip and the nozzle.<br><br> b. when installing these cartridges, the printer may prompt as "low ink" or even 'empty'. this is very common with re-manufactured ink cartridges as the ink gauge cannot be reset. <br><br>