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Hardware Checklist

  1. Disconnect all ULINKplus adapters from the PC and from your target system.
  2. Connect only one ULINKplus to the PC via USB. Do NOT use:
    • A USB hub.
    • USB cables longer than 2m(6.0 ft).
    • USB connections via docking stations or port extenders.
    • A battery-powered notebook PC. Connect your AC power adapter to the notebook PC.
  3. Is the Status LED blue? If not, try the following:
    • Exchange the USB cable with another one to ensure that the cable is not defective.
    • Try using a different USB port.
    • Try connecting ULINKplus to a different PC where MDK-ARM is installed.

    If the Status LED is orange, your ULINKplus is not enumerating and may be broken. If you have another ULINKplus, you can confirm the defect by comparing the behavior.

    Please proceed to Exchange Procedure and report code UPH1.

  4. Ensure that Keil ULINKplus is listed in the Windows Device Manager under USB-Controller. If the driver is not listed, then install the driver as described in Installing Drivers. If the installation fails, then contact the Keil Technical Support and report code UPH2.
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