Cumulative sales of Microsoft’s (MSFT) first two tablet models have failed to meet expectations, according to a new report. Citing multiple unnamed sources, Bloomberg on Thursday evening reported that sales of Microsoft’s Windows RT-powered Surface tablet have reached just above 1 million units to date. According to the same sources, Microsoft ordered about 3 million Surface slates from its manufacturing partners. Sales of the newer Surface Pro model have totalled about 400,000 thus far, the report claimed. The numbers seem fairly in line with earlier estimates that suggested Microsoft would sell fewer than 1 million tablets in the fourth quarter last year.

Zach Epstein has worked in and around ICT for more than 15 years, first in marketing and business development with two private telcos, then as a writer and editor covering business news, consumer electronics and telecommunications. Zach’s work has been quoted by countless top news publications in the US and around the world. He was also recently named one of the world's top-10 “power mobile influencers” by Forbes, as well as one of Inc. Magazine's top-30 Internet of Things experts.