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Anyone has schematic of ANY printer with USB port ?

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Aug 24, 2009
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Hi.
If you have a schematic of ANY printer with USB port; can you please check if 5V is provided at its jack ?
 

Harald Kapp

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I don't have a schematic, but I think it is unlikely that 5 V are present at the printer's USB port as the printer is a USB device. Only USB hosts provide power to USN devices, not vice versa.

Power on a USB port will be available if the printer has a USB port to handke e.g. USB sticks to print directly from stick etc. In that case the printer is the host.
 
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Harald Kapp

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The list of known compatible printers is surprisingly (?) rather small.

Follow your link, goto page 2 and look under "Power": a separate power adapter is required (and should be supplied with the USB dongle). That's where it gets power from, not from the USB port.
 

Externet

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Thanks. Missed that on the linked page. Previously I looked at another information page about the gadget. Found two more brands for the same application, also belly up, unobtanium.
I believed a plain wifi dongle fed with 5V at the printer port should do the bridging...
 
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