I did use the USB option. I could see there is my device showing up there and then it will disappear soon after. II tried 3 different cables already. Maybe I need another cable

Edit:
Okay, with another cable. Now it flashed and my Windows PC starts to recognize it!! But the Garmin express in this windows PC does not find this device. Can I unplug it now and connect it to the MAC PC to use Garmin express? Or I still have to reformat it? Thanks.