The sources revealed that Apple's Mac orders to the supply chain dropped to almost nothing after the Lunar New Year holidays. Apple had high hopes for its Mac product lines and placed aggressive orders at the end of 2012; however, the company is now badly affected by the decision.

Since Apple hardly mis-estimates its shipment forecasts, the sharp order drop may imply that Apple has underestimated the PC industry's weak status and its iPad products are affecting the PC industry more seriously than it expected.