These printers use the T786XL420 cartridge:
Click On a Printer to View it's Cartridges
          Epson WorkForce Pro WF-4630
          Epson WorkForce Pro WF-4630 DWF
          Epson WorkForce Pro WF-4640
          Epson WorkForce Pro WF-4640 DTWF
          Epson WorkForce Pro WF-5110
          Epson WorkForce Pro WF-5110 DW
          Epson WorkForce Pro WF-5190
          Epson WorkForce Pro WF-5190 DW
          Epson WorkForce Pro WF-5620
          Epson WorkForce Pro WF-5620 DWF
          Epson WorkForce Pro WF-5690
          Epson WorkForce Pro WF-5690 DWF
          Epson WorkForce Pro WP-4630
          Epson WorkForce Pro WP-4630 DWF
          Epson WorkForce Pro WP-4640
          Epson WorkForce Pro WP-4640 DTWF
          Epson WorkForce Pro WP-5110 DW
          Epson WorkForce Pro WP-5190 DW
          Epson WorkForce Pro WP-5620 DWF
          Epson WorkForce Pro WP-5690 DWF