Package Contents: 5-Pack( 2 Black 1 Cyan 1 Magenta 1 Yellow) Compatible Toner Cartridges for Brother TN227 TN223 TN-227 TN-223 Compatible Printers: Brother MFC-L3750CDW Digital Color All-in-One Printer, Brother MFC-L3710CW Compact Digital Color All-in-One Printer, Brother Mfc-L3770CDW Color All-in-One Laser Printer, Brother HL-L3290CDW Compact Digital Color Printer Providing Laser Printer Yield per cartridge approx.: 3000 pages black, 2300 pages yellow, 2300 pages magenta, 2300 pages cyan Intelligent Ink Cartridges: These toner cartridges are easy to be installed and can be recognized by the printer quickly ALLWORK adopts the advanced technology to supply reliable toner cartridges to customer, which makes it fluently to work