Amazon.com: SuppliesMAX Remanufactured Replacement for HP PageWide Pro 750/755/772/774/777/779/P7050/P77740/P77750/P77760 Black High Yield Inkjet (20000 Page Yield) (NO. 990X) (M0K28XC) : Office Products
HP PageWide Managed P77740z Multifunction Printer Software and Driver Downloads | HP® Support
HP PageWide Managed P77740z
HP PageWide Pro MFP 772/777 and HP PageWide Managed MFP P77740/P77750/P77760 - Removal and replacement: Document feeder reflector (MFP models only)removing and replacingdocument feeder reflector (MFP models only) | HP® Customer Support
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HP PageWide P77740z All in One
HP PageWide Managed MFP P77740Z Printer / Copier/Scanner | eBay