Package Included:
1xBlack/Yellow,1xCyan/Magenta (2Pcs Printheads, 1 BY / 1 MC, and 1 set of 940XL Ink Cartridges (BK/C/Y/M)， C4900A / C4901A, 2 pcs Printheads / 4 Pcs of Ink Cartridge

100% compatible with the following printers:
. HP Officejet Pro: 8000 - A809a , 8000 Enterprise - A811a , 8000 Wireless - A809n
. HP Officejet Pro: 8500A - A910a , 8500A Plus - A910g , 8500A Premium - A910n

Installation Steps:
Step 1: Please remove the cover and the protective film of the print head before installation.
Step 2: Open the printer cap and ink cartridge;
Step 3: Press the screen button "Change the print head";
Step 4: The printer clip move to stay left automatically;
Step 5: Open the print head clip, take out the defect print head;
Step 6: Set up the new remanufactured print head;
Step 7: Lid the print head cap;
Step 8: After lid the print head cap, it will take around 20 minutes to ready for printing process.

Note:
1. Our print head is remanufactured, not original one, Non OEM value-save more for you;
2. Please shake the print head before installation, it will avoid bubble problem in the ink. Kindly note the bubble in the ink will cause your printer can't print well.
3. When you replace the print head, please do Printer Head Cleaning 2~3 times every time.

After-sales Service / How to contact us(3 Months Money Back Warranty):
Product listing > Click Sold by Titlebaum> Choose the option Ask a question
Log into Your Account > Click Your Account > Your Order > Find your order and click Contact Seller