Communication problems over a USB connection

If the HP All-in-One and computer are not communicating with each other, try the following:

•Look at the display on the HP All-in-One. If the display is blank and the Power button is not lit, the HP All-in-One is turned off. Make sure the power cord is firmly connected to the HP All-in-One and plugged into a power outlet. Press the Power button to turn on the HP All-in-One.

•Check the USB cable. If you are using an older cable, it might not be working properly. Try connecting it to another product to see if the USB cable works. If you experience problems, the USB cable might need to be replaced. Also verify that the cable does not exceed 3 meters (9.8 feet) in length.

•Make sure your computer USB ports are enabled. Check the documentation that came with your operating system for more information.

•Check the connection from the HP All-in-One to your computer. Verify that the USB cable is securely plugged into the USB port on the back of the HP All-in-One. Make sure the other end of the USB cable is plugged into a USB port on your computer.

After the cable is connected properly, turn the HP All-in-One off and then on again.

•If you are connecting the HP All-in-One through a USB hub, make sure the hub is turned on. If the hub is on, try connecting directly to your computer.

•Check other printers or scanners. You might need to disconnect older products from your computer.

•Try connecting the USB cable to another USB port on your computer. After you check the connections, try restarting your computer. Turn the HP All-in-One off and then on again.

For more information on setting up the HP All-in-One and connecting it to your computer, see the Setup Poster that came with the HP All-in-One.

Troubleshooting tips

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HP J5740, J5788, J5780, J5750 manual Communication problems over a USB connection
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J5788, J5740, J5780, J5750 specifications

The HP J5780 is a versatile all-in-one inkjet printer that combines printing, scanning, copying, and faxing capabilities in a single device. Ideal for home and small office environments, this printer is designed to cater to a wide range of document-related needs. Its compact form factor allows it to fit easily into tight spaces without sacrificing functionality.

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In summary, the HP J5780 is a comprehensive all-in-one solution that emphasizes productivity without compromising quality. Its combination of printing, scanning, copying, and faxing functionalities, along with its user-friendly features, makes it a reliable choice for those seeking efficiency and versatility in their document management tasks. Whether for home use or small office settings, the HP J5780 delivers dependable performance and a range of technologies designed to meet diverse printing needs.
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