If your device is not visible and you've confirmed it's not sleeping, your USB interface may require the following VCP driver from the USB chip vendor website.
Link below.
****https://ftdichip.com/drivers/vcp-drivers/****
For PC Computers:
Scroll down to the middle of the page till you come to the Processor Architecture Header.
Processor Architecture-
1. Windows (Desktop)-- 2021-07-15: Release Date--Comments Section--->Click on "Setup executable" hyperlink.
2. File Will Download: CDM212364_Setup File---> Run Program and Allow.
3. FTDI CDM Drivers---> Extract & Accept & Follow the Prompts through the Installation Wizard Agreement.
The SEFW Updater Application may need a refresh. Close out of the application and reopen and select the enc firmware file. Once the VCP driver is installed, your device should now be discoverable under Choose device field.
For Mac Computers:
Scroll down to the middle of the page till you come to the Processor Architecture Header.
Processor Architecture-
1. Mac OS x 10.14 (if operating system up to date)--2019-12.24: Release Date--X64(64 Bit) Section---> Click on 2.4.4 Hyperlink
2. File Will Download- Locate under Downloads or Finder Folder---> FTDIUSB Serial Driver---> Open folder and follow through install prompts.
3. Continue and will receive Installation was successful prompt.
The SEFW Updater Application may need a refresh. Close out of the application and reopen and select the enc firmware file. Once the VCP driver is installed, your device should now be discoverable under Choose device field.