GENUINE HP 88XL C9396AE BLACK INK CARTRIDGE OFFICEJET PRO K5400 K8600 L7480 1315
This is an. K550 ,K5400, K8600, L7480, L7580, L7590 L7680, L7780. HP Officejet Pro series. happy to help. if it was one supplied by us and is tested to be faulty we will replace it.