Hello,
You can download LPCXpresso from the next link:
After download and install it you can find some LPCOpen examples for the LPC4088 device. In these examples are included USB examples that you can debug and use.
In addition please check the below link:
USB with NXP Microcontrollers | www.LPCware.com
Please let me know if this helps!!
Have a great day,
Sol
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