There is only ONE connector on Firefly which is USB Type-A to connect to macOS computer.
There is 2.4GHz WiFi.
There are 2 LEDs, and they are red and green respectively.
When Firefly is connected to macOS, red LED lights.
When WiFi is connected, green LED blinks.
Step 2: configure WiFi and register Firefly
Please login www.usb7.net with your Google account before proceed. If you do not have Google account, please create one.
Connect Firefly to macOS computer.
After 25 seconds, Firefly finishes booting and red LED lights. In computer browser input Firefly IP address 172.16.10.1 to access Firefly.
Follow instructions in the browser and connect Firefly to WiFi. After 10 seconds, can see Firefly WiFi IP address and green LED blinks (this indicates WiFi is connected).
Click "Go to register" button at the top right to register Firefly with www.usb7.net account.
Connect Firefly to macOS computer you want to remotely access.
In your remote macOS computer System Settings => General => Sharing, enable Screen Sharing which is macOS built-in application.
Change more settings if you wish to configure macOS Screen Sharing.
Step 3: access Firefly
Both remote computer (e.g. iMac, Mac Mini or Mac Pro) and local computer (e.g. Mac Book Air) must be macOS.