Replacing the Printhead for HP Photosmart Premium All-in-One (C309) and HP Photosmart Premium Fax e-All-in-One (C410) Printer Series | HP® Customer Support
HP Photosmart Premium C309g Printhead Replacement - iFixit Repair Guide
HP PhotoSmart Premium C309 All-In-One Inkjet Printer-RARE-SHIPS N 24 HOURS | eBay