These printers use the TN660 cartridge:
Brother DCP L-2500 D
Brother DCP L-2520 DW
Brother DCP L-2540 DN
Brother DCP L-2540 DW
Brother DCP L-2560 DW
Brother HL L-2300 D
Brother HL L-2305 W
Brother HL L-2315 DW
Brother HL L-2320 D
Brother HL L-2340 DW
Brother HL L-2360 DN 32PPM
Brother HL L-2360 DN
Brother HL L-2360 DW
Brother HL L-2365 DW
Brother HL L-2380 DW
Brother MFC L-2680 W
Brother MFC L-2685 DW
Brother MFC L-2700 DN
Brother MFC L-2700 DW
Brother MFC L-2703 DW
Brother MFC L-2705 DW
Brother MFC L-2707 DW
Brother MFC L-2720 DW
Brother MFC L-2740 DW