Epson SureColor P20000 Standard Edition 64" Large-Format Inkjet Printer - Manual (Page 57)

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18. Connect the other end of the USB cable to the port on the back of the auto take-up reel.
19. Coil the excess cable and secure it using the cable clamp on the bottom of the printer stand.
20. Connect the power cord to the AC inlet on the back of the auto take-up reel and route the cord
through the same cable clamp as the printer's power cord.
21. Plug the auto take-up reel power cord into an electrical outlet.
Parent topic: Using the Optional Auto Take-up Reel
Attaching the Roll Core to the Auto Take-up Reel
You need to attach the roll core to the auto-take up reel before you can load paper onto the take-up reel.