Printing from usb memory, Preparation for print from the usb memory, Printing from usb memory -43 – Sindoh M611 User Manual
Page 127: Preparation for print from the usb memory -43, For more information, refer to, Print from a usb memory」 (p. 3-43)

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Scanner, Printer and Fax
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7. Printing from USB Memory
Preparation for Print from the USB Memory
1
Insert the USB memory to the machine.
2
When the message “Select functions with USB” pops up, select [Print] and press. 【OK】 button.
3
The LCD shows printable files or folders on the USB memory.
4
Press 【▲】 or 【▼】button to select the files to print, and then press 【OK】 button.