Firebeetle ESP32 V4 cannot be seen by Windows

Hi all, apologies if this seems basic, but I can't can't get Windows to see my Firebeetle board.

I have a Firebeetle ESP32 V4 board that looks like one in this link.

After connecting the micro USB to the computer all I get is a flashing red CHG LED and a flashing blue L LED.

Is there something basic I'm missing here?

I have other ESP32/9266 boards here and have never had such issues.

Any guidance would be very much appreciated.

Thanks in advance,

Jim…..