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At the heart of the technical details for the ECO 4000 A is its mobile AMD Sempron processor that provides high yet stable performance. The innovative AMD PowerNow! technology particularly stands out: Depending on the computing power required the electricity feed rises or falls automatically. The result of calling up performance as required is that battery life is extended and heat development reduced. Thus users benefit from longer use and from lower operating noise. In order for users to access the volume control, the ECO 4000 A also has a silent mode switch. Furthermore the installation of WLAN 802.11 b/g, a multimedia card reader and enhanced virus protection mean that entry level and other users have everything they need to start modern mobile computing. In addition the ECO 4000 A is not only extremely flexible but with its slim-line look is a particularly good business companion.