User`s guide

Universal Library User's Guide Digital Input/Output Boards - USB-1024 and USB-DIO24 Series
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Miscellaneous functions and methods supported
UL: cbFlashLED()
UL for .NET: FlashLED()
Causes the LED on a USB device to blink.
When you have several USB devices connected to the computer, use these functions to identify a particular
device by making its LED blink.