MacBook – How to check what keyboard type is installed in MacBook Air by serial number

In addition to Max Ried's answer, several more sites share EveryMac.com's functionality, including the following:

• PowerBookMedic
• Apple Serial Number Info
• http://www.chipmunk.nl/klantenservice/applemodel.html (English translation is on the site)
• Apple support website (this is really a search for tech specs, and I think you've already mentioned it in your question, but you can also search by serial numbers here)

I found one way.

I am an iOS developer, and I once used this iPad for development. Xcode has an Organizer window, which keeps tracks of the devices I used for development. The iPad appears on the list, and it also displays the serial number.

This of course only works if you have developed with the device using Xcode. I wonder if there is a more standard way to get the serial number.