While the ability to customize products, when combined with low prices, has made Dell attractive to customers, the real power of the business model is to be found in how Dell manages its global supply chain to minimize inventory while building PCs to individual customer orders within three days. Dell uses the Internet to feed real-time information about order flow to its suppliers. Dell's suppliers, wherever they are located, have up-to-the-minute information about demand trends for the components they produce, along with volume expectations for the next 4 to 12 weeks that are constantly updated as new information becomes available.