Get usb device unreconized when I plug wcs3900 into usb port

You can generally use any USB port to support a USB device. There are minor details such as speed but the computer will generally tell you if you plug a device into a slow (USB 1.1) port when the device will work better with a USB 2.0 or 3.0 port.

The newer your computer, the more likely it is that you will have all faster ports.

This is because you are plugging in a USB 2 device to a standard USB port, or a USB 3 device into a USB 2 port. The computer is just telling you that if you upgrade the hardware, the device will work faster. Its more of an information message than an error. Your device should still function fine.

Chances are the reader is defective. Try to plug it into another computer to confirm this. If it works try another USB device to confirm that the port is working.

Hi Craig, Have you already installed or tried re-installing the Sony driver software? It sounds like that's the missing piece with what you've described above. You can download the Reader Library software from Sony's website and then try connecting your device once that's been installed.

That's a peculiar problem. Make sure all your drivers are up to date, and try other USB ports if available. If you have access to other computers, see if they recognize your device as well.

If you get an error message"Insufficient power to operate USB device" when you plug a USB deviceinto the computer's USB port, then this device is drawing excessive currentthat the USB port cannot supply. In case such as this, youneed to purchased a powered USB hub and connect this hub into the computer'sUSB port and then connect the USB device into this powered USB hub.

once the card is install u have to disable the onboard video by going into systems than device manager click on video and disable the intergrated video

SOLUTION 1 - Verify if minimum system requirement is met.
SanDisk card readers support Windows Vista, Windows XP SP2 and Windows 2000 SP4.

For MAC users, see Troubleshooting USB device on MAC


SOLUTION 2 - Verify the reader's status under Device Manager.

STEP 1 - Connect the reader to the PC

NOTE: It is recommended that you plug your card reader to the back USB port on your PC to ensure that there is enough power from the USB port for the card reader to be detected properly.

STEP 2 - Check under Device Manager
1. Right-click My Computer.
2. Select Manage.
3. On the left pane, click Device Manager.

NOTE: The card reader will appear in two places: Disk Drives and Universal Serial Bus controls as USB Mass Storage. If there is a yellow exclamation point (!) or question mark (?) next to the device, try to refresh the drivers.

STEP 3 - Refresh the drivers
1. Right-click the entry with the error mark, select Uninstall.
2. On the top menu, click Action, and then click Scan for hardware changes.

STEP 4 - Verify if the reader is detected
1. Double-click My Computer.
2. Look for the card reader under Devices with removable storage.


SOLUTION 3 - Try other USB ports.
A yellow exclamation point (!) under Device Manager usually means that the device is not receiving enough power. If the reader is not receiving ample amount of power from the USB port, it may not function properly.


SOLUTION 4 - Change the drive letters

NOTE: The SDDR-89 reader should show 4 drive letters under My Computer.

Windows xp, Vista, and Windows7 should already have a driver included for the v-touch. It's possible that if your computer has a compact flash card reader, that it maybe preventing the v-touch driver from being correctly installed. Try using the "Safely remove Hardware" to temporarily remove your cf card reader. Then try plugging in your v-touch. It should now correctly install the driver and the v-touch will show up as a new drive. In Windows Device Manager under "Disk Drives" you should see 2 new devices - "Company PNP Platform OPN USB Device" and "Company PNP Platform SDC USB Device

The driver for the device is faulty. When you plug in a USB device, the computer should load and then configure the device without ever requesting a device driver. If the computer prompts you for a device driver, check the information that came with the device or go to the manufacturer's website to see if a driver is available.

The USB port might be defective. If the USB device is connected to a defective port, the device will not work. Try plugging the device into a different port. If all the USB ports are being used, unplug a device that you know works, and then plug the problem device into the port that device was using.
If the device is plugged into a secondary USB hub with other USB devices, unplug the device from the hub, and then plug the device directly into a port on your computer.

Other USB devices might be drawing too much power from the hub. The device you are trying to use might require all the available power or bandwidth that your computer can provide. If other USB devices are connected to the computer and are drawing power from it, the first device might not work. If any other devices are drawing power from the hub, try disconnecting them, and then see if your device works. If this solves the problem, you might want to obtain a USB hub with its own power supply so that you have adequate power for all devices.