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The HP ProBook 4445s, 4446s and 4545s Notebook PCs are equipped with all-new 2012 AMD A-Series accelerated processors and VISION Pro Technology to provide the right performance to tackle intensive work assignments. AMD Enduro Technology -- formerly known as AMD Dynamic Switchable Graphics -- uses discrete graphics to create brilliant visuals when plugged in and allows the PC to automatically switch to battery like Dell Latitude D820 Ac Adapter , Dell Latitude D500 Ac Adapter , Dell Inspiron E1505 Ac Adapter , Dell Inspiron E1405 Ac Adapter , Dell Inspiron 600M Ac Adapter , Dell Inspiron E1705 Ac Adapter , Dell Latitude X200 Ac Adapter , Dell Inspiron 2650 Ac Adapter , Dell Inspiron 2600 Ac Adapter , Dell Inspiron 2500 Ac Adapter , Dell Inspiron 7500 Ac Adapter , Dell Latitude CS Ac Adapter -saving mode by powering down the discrete GPU when unplugged, all while still delivering great performance on everyday business applications.(13) These HP ProBook s-series notebook