Acer's shift to mobile may have taken an immediate effect on its production, part supplier insiders said Monday. Orders for its Aspire One netbooks are supposedly being gradually replaced with its Iconia Tab models this month, with the A500 now on sale at Best Buy. As many as 400,000 to 500,000 of the 10-inch touchscreens for the Android-based A500 and Windows-based W500 had been ordered for April, Digitimes said.