static string SerialNumString(byte product_id, ushort serialnum_batch, ushort serialnum_unit)
This method takes the numeric components of the ETH32 serial number and formats a serial number string in the same way that it is printed on the ETH32 device enclosure.
product_id - The product ID portion of the serial number
serialnum_batch - The batch number portion of the serial number
serialnum_unit - The unit number portion of the serial number