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) 
After you have downloaded the software and double click on the 1115480.zip 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. 
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.
 - Select properties and verify the 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.
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