1. My computer does not recognize the scanner
For Windows® 8 and Windows Server® 2012 users:
In order for the computer to recognize the scanner via a USB 3.0 port on Windows® 8 and Windows Server® 2012, it is necessary to update USB Scanner Class Driver provided by Microsoft Corporation. Install the following Windows Update.
Update Program for Windows® 8 and Windows Server® 2012 (KB2770917)
If you select the "Install updates automatically (recommended)" Windows Update setting, this update is automatically installed. Refer to the following support page of Microsoft Corporation for further details.
Windows® 8 and Windows Server® 2012 cumulative update: November, 2012
http://support.microsoft.com/kb/2770917 
If your computer still does not recognize the scanner after Windows update, please refer to No.2 My scanner does not operate properly.
For Windows® 7 (or earlier) users:
Depending on the USB 3.0 host controller manufacturer, the computer may not recognize your scanner. In this case, connect via USB 2.0 to use the scanner. The recognition status of each USB 3.0 host controller manufacturer is as follow:
| USB 3.0 host controller manufacturer | Recognition Status |
|---|---|
| Renesas Electronics | The recognition via USB 3.0 is confirmed. Note: If your computer still does not recognize the scanner after Windows update, please refer to No.2 My scanner does not operate properly. |
| Intel Corporation | |
| Advanced Micro Devices, Inc.(AMD) | |
| Manufacturers other than the above | The scanner may not recognize via USB3.0 controllers. Connect the scanner via a USB 2.0 port. |
The operation via USB 3.0 on Windows Server® 2008 is not supported.
2. My scanner does not operate properly
Depending on the computer environment, your scanner may not operate properly regardless of the Operating System.
Symptom
- My computer does not recognize the scanner
- Communication error occurred during scanning
Solution
Connect the scanner via a USB 2.0 port.
How to check the USB 3.0 host controller manufacturer
-
Open "Device Manager".
For Windows® 7 / Windows Server® 2008 R2
[Start] menu -> [Control Panel] -> [Hardware and Sound] -> [Device Manager]
For Windows Vista®
[Start] menu -> [Control Panel] -> [System and Maintenance] -> [Device Manager]
For Windows® XP
[Start] -> [Control Panel] -> [Performance and Maintenance] -> [System] -> [Hardware] tab -> [Device Manager] -
Click the mark (or the "+" mark) left of "Universal Serial Bus controllers" or "USB (Universal Serial Bus) controllers".
-
The manufacturer name is shown in "XXXX USB 3.0 Host Controller" (or "XXXX USB 3.0 Enhanced Host Controller", "XXXX USB 3.0 eXtensible Host Controller", or "XXXX XHCI Controller",etc.), where XXXX is the name of the manufacturer.
Reference: Device Manager dialog box