Microsoft's $900M Surface RT write-down: What happened? | Microsoft - CNET News

I'm guessing we're next going to see generous Microsoft Surface RT donations to K-12 schools

"But again, why did Microsoft make so many Surface RTs? If some back-of-the-napkin calculations are right, Microsoft may be sitting on an inventory of 6 million unsold Surface RTs. (Microsoft won't say how many devices it made or sold.)
Isn't this a company whose officials have prided themselves on telemetry data and visibility? Yes, it was the first time Microsoft was making its own PCs, but the company has made its own gaming console, mice, and keyboards in the past, so there were people at the company who knew a considerable amount about supply chains."

Microsoft's $900M Surface RT write-down: What happened? | Microsoft - CNET News