 HP C9387AN (HP #88 Magenta) Compatible with HP Officejet Pro K550 Series and K5400 Series, L7580, L7590 L7780. Market price: $20.96 Sale price:  |  HP C9386AN (HP #88 Cyan ) Compatible with HP Officejet Pro K550 Series and K5400 Series, L7580, L7590 L7780. Market price: $20.76 Sale price:  |
 HP C9388AN (HP #88 Yellow) Compatible with HP Officejet Pro K550 Series and K5400 Series, L7580, L7590 L7780. Market price: $20.96 Sale price:  |