These printers use the TN5000PF cartridge:

Brother Fax 2600

Brother Fax 3550

Brother Fax 3650

Brother IntelliFax 2600

Brother IntelliFax 2750

Brother IntelliFax 3550

Brother IntelliFax 3650

Brother IntelliFax 3750

Brother IntelliFax 7550 MC

Brother MFC 3000

Brother MFC 3550

Brother MFC 4300

Brother MFC 4340

Brother MFC 4350

Brother MFC 4450

Brother MFC 4550

Brother MFC 4550 Plus

Brother MFC 4600

Brother MFC 4650

Brother MFC 6550 MC

Brother MFC 6650 MC

Brother MFC 6750 MC

Brother MFC 7550 MC

Brother MFC 7650 MC

Brother MFC 7750

Brother MFC 7750 MC

Brother MFC 9000

Brother MFC 9050

Brother MFC 9500

Brother P 8000

Brother PPF 2600

Brother PPF 2750

Danka Omnifax L-621