TravelMate 4520/4220, Extensa 4420/4120 Service Guide
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... t DC-in Microsoft Windows Vista . Bluetooth, and WLAN functions T Ethernet and modem ports: link and activity indicators Power subsystem T 44W 4000 mAh Li-ion battery pack (6-cell) T 3-pin 65W AC adapter T Acer QuicCharge™ battery technology T ACPI (Advanced Configuration and Power Interface)...Lock, and Caps Lock T Front edge: power status, battery charge; Chapter 1 3 T Data security t Acer Bio-Protection solution provides network and data security by letting you secure the notebook to a class driver architecture for a light-weight and reliable safeguard against physical damage.
... t DC-in Microsoft Windows Vista . Bluetooth, and WLAN functions T Ethernet and modem ports: link and activity indicators Power subsystem T 44W 4000 mAh Li-ion battery pack (6-cell) T 3-pin 65W AC adapter T Acer QuicCharge™ battery technology T ACPI (Advanced Configuration and Power Interface)...Lock, and Caps Lock T Front edge: power status, battery charge; Chapter 1 3 T Data security t Acer Bio-Protection solution provides network and data security by letting you secure the notebook to a class driver architecture for a light-weight and reliable safeguard against physical damage.