New mkrzero not recognized on two different PCs

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i received new mkrzero board.  cannot show on either ubuntu linux laptop or macbook pro.  when connect board via usb either computer, board appears power up.  green light on solid , orange light cycles on , off.

i've tried reset button while board plugged in - no change.

i've tried using "lsusb" on linux laptop - no change when board unplugged or plugged in.

i plugged in uno board same usb port - instantly recognized , shows in arduino ui fine.

is defective mkrzero board?  else can try?



Arduino Forum > Using Arduino > Installation & Troubleshooting > New mkrzero not recognized on two different PCs


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