I don't see a round hole at the back for the air hose. There is only a square opening, which is barred. I looked inside with a torch and there is no round opening or anything else to be seen.

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Accepted Answer

Then you have found the device adapter, well, have a nice weekend

Answer

ok, there is definitely a round hole so that you can expel the hot air

Answer

It's done. Found a solution on the Internet. The "instructions" supplied are confusing.

Your data. Your choice.

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Question about Comfee MPPH-09CRN7

I don't see a round hole at the back for the air hose. There is only a square opening, which is barred. I looked inside with a torch and there is no round opening or anything else to be seen.