Epson WF-3620, WF-3640 Maintenance box replacement without Adjustment Program.
Checking the Maintenance Box Level - Windows
T6711 Waste Ink Maintenance Tank Box with one time Chip For Epson WF-3010 WF-3520 WF-3530 WF-3540 WF-3620 WF-3640 WF-7110DTW | Epson, Maintenance, Chips