HP OfficeJet Pro X476 and HP OfficeJet Pro X576 - Device off hook (fax dial pad disappears) | HP® Customer Support
Printhead Head for HP Officejet PRO X451 X551 X476 X576 X451DN X451dw X476DN (CN459-60259 CN598-67045 CN646-60014 CN646-80014) OEM - China Printhead, Printhead Head | Made-in-China.com