CNET has contacted Microsoft for comment and will update this report when we learn more.

This isn’t the first time Acer has criticized Microsoft’s tablet ambitions. Oliver Ahrens, Acer’s senior VP and president for Europe, Middle East and Africa, told Reuters soon after the Surface’s unveiling that Microsoft’s strategy to take on Apple with the Surface tablet will fail.

“I don’t think it will be successful because you cannot be a hardware player with two products,” he said. “Microsoft is working with two dozen PC vendors worldwide, including the local guys, whereas Apple is alone, it can more or less do what it wants.”

In its recent annual report, Microsoft indicated it was aware that developing Windows for both PCs and an increasing array of mobile devices might negatively affect its relationship with original equipment manufacturers.

“Even if many users view these devices as complementary to a personal computer, the prevalence of these devices may make it more difficult to attract applications developers to our platforms,” the company said in its filing with the SEC last month. “In addition, our Surface devices will compete with products made by our OEM partners, which may affect their commitment to our platform.”

The Surface tablets are of two types RT and Pro. The iPad killer, RT is expected to release in October while the Pro will follow the suit in three months.