HP Calculators Timeline » HP 49g+ » HP49G+ rom upgrade » HP Graphing Calculator USB Device Driver

HP Graphing Calculator USB Device Driver

This is the same driver for HP 39g+, HP 39gs, HP 48gII, HP49g, HP49g+ and HP 50g Calculators.

Manufacturer: HP Company
Location: HPx9G+ Device
Driver Provider: KinpoSH
Driver Date: 2003.07.12
Driver Version: 1.0.4.0
Driver Details: %windows%\system32\drivers\hpx9g+.sys

Here is the quick procedure of how you can obtain and install the USB drivers. This procedure is applicable for HP 40gs, HP 48gII and HP 50g Calculators.

Note: This procedure is also similar if you have the Vista Operating System.

I) Downloading and extracting the file

Download (File Size: 24KB)

Screen 1

After you have downloaded the software and double click on the zip file and you should see the screen like the above. Follow step 1 to 3 and one step 3, type in C:\ and click the next button. This will extract the files inside zip file and put them in c:\UsbDriver folder on your computer hard disk.

II) Installing the Calculator USB driver

Plug in the cable between the calculator and the computer. You should be able to hear a USB detection and if the driver has not be previously installed, the "Found New Hardware Wizard" will appear.

Screen 2

On step 5., remember to change the location of the file to C:\UsbDriver so that the installation wizard knows where to look for it. If you are prompted "Hardware Installation... HPx9g+ DEVICE...", do click on the "Continue Anyway" button.

III) Check that the USB driver has been properly installed

  • Right click on My Computer icon on the desktop.
  • Select Properties
  • Select Hardware Tab
  • Click on Device Manager, and scroll down to "Universal Serial Bus controller".
  • Click on the [+] icon to expand this key.
  • Look for HPx9G+ Device.

Below is the newer USB Driver for HP49G+. If your driver version is smaller than 1.2.0.0 then you may want to download and update it.

To check your driver version...

  • Right click on My Computer icon on the desktop.
  • Select Properties
  • Select Hardware Tab
  • Click on Device Manager, and scroll down to "Universal Serial Bus controller".
  • Click on the [+] icon to expand this key.
  • Look for HPx9G+ Device (if you can see this, re-connect up your calculator and turn it on).
  • Right click on it.
    usb driver
  • Select properties and verify the version.
    usb version
    Location: HPx9G+ Device
    Driver Provider: KinpoSH
    Driver Date: 2004.01.03
    Driver Version: 1.2.0.0
    Driver Details: %windows%\system32\drivers\hpx9g2k.sys

To update this driver:

  • Download (File Size: 18KB) and unzip contents into as a folder.
  • Right click on the HPx9G+ Device node and select the "Update Driver..." option.
  • Point the unzipped folder.

Updated On: 15.02.19

  1. On 01-Nov-2012, Lrq3000 wrote: 
    Had the same problem here. Just download the latest USB drivers for your HP calculator on HP website (v1.3 at the time of this writing). Then after you installed this driver (which works with all versions of Windows up to Seven x64), you still can’t use the HP’s Calculator PC Connectivity Kit! But there’s a new unofficial version (made by the same authors than the official ones) on their own website: http://www.debug4x.com/
    There you will find Debug4x and more importantly Conn4x Build 2361, which works on Windows up to Seven x64
    Your reply to Lrq3000

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