Question about HP PhotoSmart C4280 Laser Printer

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Usb port I went under my computer desk and unplugged the USB to the C4280 scanner and can 't figure out where it plugs back in sign me, VERY BLONDE

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  • momdlt Jun 29, 2008

    All finished! Thanx!

  • Tim Babcock
    Tim Babcock May 11, 2010

    Is it unplugged from the computer or the printer?



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  • 449 Answers

Thats very simple friend, just go back to your system and search for a flat connector called usb with a symbol to make you identify it on the cable of the scanner and on the back of the system

Posted on Jun 28, 2008


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1 Answer

How to get my keyboard back working on my desk top

1: if the keyboard has a round plug going into the computer, it is a PS/2 plug. Turn off your computer, unplug the keyboard, then plug it back in, making sure it is plugged into the correct place for the keyboard (and not the mouse). Then turn the computer back on.

2: If the keyboard has a USB plug, it is not necessary to turn off the computer first, just unplug the USB cable for a few seconds then plug the cable back into the computer. If it still doesn't work, try plugging the USB plug into another USB port on the same computer.

3: If neither option works, you may have a defective keyboard.

Sep 05, 2017 | Top Computers & Internet

1 Answer

I have a hp printer/scanner 3510 and hp computer, the printer works fine but it won't scan!! the lcd screen says, "the computer is not responding. check if the usb cable is attached" the cable is...

Unplug the USB cable to the printer. Uninstall the HP printer software. Reboot. Reinstall the HP printer software and WAIT until the installation program tells you to plug in the USB cable.

Mar 09, 2014 | HP Photosmart C4280 Aio Printer

1 Answer

Can't scan--says usb not connected

Check your cable and ports. If you are running a laptop, make sure it is connected to AC. Plug in a known working device. If using a hub, directly connect the printer to the computer. Try a new USB cable. Check if your USB ports have been disabled for security or power-savings (in the Device manager or advanced power savings areas).

I hope these ideas help.

Cindy Wells
(sometimes a flaky USB port will see the device if you just unplug it and then plug it back in to the port. However, this will need to be repeated regularly.)

Jan 05, 2010 | HP Photosmart C4280 Aio Printer

1 Answer

Get message USB not connected when trying to scan

Right mouse click on my computer then click on hard were click ondevice manager, then click on port there may be yellow sign in usb port keepiung cd install it. 2/ if not work change usb cable to check ithink ucan solve your problem. 3 if not solve or u have desk top computer change usb card which we keep on on mother board slot. as amodeam and other card thank

Jun 19, 2009 | HP Photosmart C4280 Aio Printer

1 Answer

I am trying to reinstall HP Scanjet 5400c but it keeps telling me it can't initialize, no scanner recognized...WindowsXP.. it worked before, why not now?

I had similar problem with my UMAX scanner on numerous occasions. I now have this pg earmarked for quick reference! may help I don't know for sure but it is an easy test and if it works your good to go!
It is important that you connect the scanner's power and USB cables in the following order:
1. Plug the power adapter cord into the scanner and into an outlet. The scanner's power will then be on.
2. Connect the USB cable to the USB port on the
back or front of the computer.
NOTE: If you unplug the scanner's power ,you must also disconnect the USB cable from the computer. To resume use of the scanner, remove the power card, the the USB cable.

Sounds like a lot but the order is essential!
If it works, High lite Do unplug USB/unplug cable back of scanner/and plug cable back of scanner then USB!
Good Luck Hope this helps!

Mar 26, 2009 | HP ScanJet 5300C Flatbed Scanner

1 Answer

Won't turn ON

This is an external burner right? They usually have a power supply and wall plug and don't power up from the USB. To make sure check the drive to see if there is a plug for a power cord on the enclosure back. My money is on that you will need to call some friends to help you move the desk.

Jan 16, 2009 | Magic INCDRW4048 MagicSpin (INCDRW4048)...

4 Answers

Scanner keeps saying USB not connected

Use the scan commands from the HP device manager, not the printer.

Jul 26, 2008 | HP Photosmart C4280 Aio Printer

1 Answer

Connecting USB during install freezes computer

There are many possible reasons why your computer will shut down when your USB is used but most probably your PC power supply might not have enough power, try unplug other devices such as printers, scanners, other input/output devices except the mouse & keyboard.

Apr 23, 2008 | HP Photosmart C4280 Aio Printer

3 Answers

The scanner keeps saying that my USB is not plugged in and it is

There is a workaround without messing with drivers. I have the same problem if I use the buttons on the v40 and try to scan. I get the V40 can not connect to the PC message.


Go to Control Panel-->Scanners and Cameras

In there you will find: Hewlett-Packard OfficeJet V40 Scanner

Right click and select Scan. It will then start the scan wizard which will scan your document.

Jan 26, 2008 | Office Equipment & Supplies

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