The computer industry has been doing it for at least 40yrs.
In the 70s/80s they would sell you a 14" removable-pack hard drive with a capacity of 40MB (unformatted) and the option to upgrade later to 80MB. It cost £thousands to upgrade but all that was needed was about 4 pieces of jumper wire inside a little plastic plug so that the drive accessed every track on the disk instead of every alternate track. The customer engineers would run diagnostics for a few hours after changing the plug so it looked like a half-day job.
Today's business servers are all sold with 'hardware-on-demand' where you can switch on more CPU cores or memory with a firmware 'key' or tell the system to do it automatically and you'll be billed for the extra resources as and when you use them. Handy if you only need the extra ooomph at end of month when you're running payroll/stock/reports at the same time.
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Dacia-Renault - Free hot water bottles new
Dacia-Renault - Free hot water bottles new