This is a Genuine  Brother TN3380 Black Laser Toner compatible with the following printers:

Brother DCP Printers:
Brother DCP 8110dn, Brother DCP 8250dn,
Brother HL Printers:
Brother HL 5440d, Brother HL 5450dn, Brother HL 5450dnt, Brother HL 5470dw, Brother HL 6180dw,
Brother MFC Printers:
Brother MFC 8510dn, Brother MFC 8520dn, Brother MFC 8950dw, Brother MFC 8950dwt

This Laser Toner has a Page Yield of 8000