I recently received a new mkrzero board. I cannot get it to show up on either an Ubuntu Linux laptop or a Macbook Pro. When I connect the board via USB to either computer, the board appears to power up. Green light is on solid and the orange light cycles on and off.
I've tried the reset button while the board is plugged in - no change.
I've tried using the "lsusb" on my Linux laptop - no change when the board is unplugged or plugged in.
I plugged in an Uno board into the same USB port - it is instantly recognized and shows up in the Arduino UI just fine.
Is this a defective Mkrzero board? Anything else I can try?