Serial Number in WUI?

It looks like prior to firmware 7.0-8a the serial number of a LoadMaster was shown next to the Machine Identifier in the WUI, something like 'aA1bB2cC3dD4 (Instance 123456)' where '123456' is the serial number.  Since upgrading to 7.0-8a this serial number is no longer displayed.

Given that Kemp like to refer to serial numbers when talking about support and maintenance, how should I find the serial number for my VLMs now?

Thanks