HP Officejet Pro 8600 Plus Duplexer N911g Rear Paper Access Premium N911n Duplex

Description

HP Officejet Pro 8100 Duplexer Rear Paper Access
Supposedly compatible with the following models (but do your own research.)
HP officejet pro 8600 e-all-in-one printer - n911a
HP officejet pro 8600 plus e-all-in-one printer - n911g
HP officejet pro 8100 eprinter - n811a/n811d
HP officejet pro 8600 premium e-all-in-one - n911n
HP officejet pro 8600 e-aio printer rev2013
HP officejet pro 8600 plus e-aio printer rev2013
HP officejet pro 251dw printer