How to reset toner and drum counters on Brother Printers
Toner Reset Lever Flag Gear side end cap for Brother TN630 TN660 HL L2300 L2320 L2340 L2360 L2365 L2380 L2520 L2540 L2720 L2740|Printer Parts| - AliExpress
How to Reset Toner Level Brother TN660 TN2320 - YouTube