Your VBOX II will have stickers on the left-hand side panel that contains relevant product info, such as serial number, version number and regulatory markings.
The front of the box will have a blue sticker with the product number and the bandwidth.
- VB2SX-V3 only - Units sold from 22 April 2022 onwards – Compatible firmware: VBOX IISX 20 Hz (V3 only)
- VB20SL-V4 S/N 096429 onwards - Units sold after June 2022 - Compatible firmware: VBOX IISX 20 Hz Dual Antenna - Hardware variants from S/N 096429