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Specifications: Output power: 90W USB port: 5V/1A, with LCD display Input voltage: 110 to 240V, 50/60Hz Input current: 1.** Output voltage: 12V DC/**, 15 to 19V DC/3.** and 20 to 24.5V DC/3A Output current: **, 900W (maximum) Protections: OCP, OVP, SCP and OTP Suitable for home and office use Different voltage and different tips (8 pieces), suitable for most notebooks Interchangeable smart tip according to output voltage Carton dimensions: 56.5 x 42 x 33.5cm (40 pieces/carton) DC connectors: 6.3 x 3.0mm (Toshiba) 5.5 x 2.5mm (IBM/Lenovo, Acer, Asus, Compaq, Delta, HP, Fujitsu, Gateway, Toshiba, Liteon) 6.5 x 4.4mm (Sony/Fujitsu) 4.8 x 1.7mm (HP/Compaq) 5.0 x 3.0mm (Samsung) 5.5 x 2.1mm (Acer, Compaq, Delta, HP, Fujitsu, Gateway, Toshiba and Liteon) 6.5 x 4.4mm (Sony) 4.0 x 1.7mm (HP and Acer) Optional tips list: 7.4 x 5.0mm (Dell D series) 3-pin (Dell C series) 7.9 x 5.4mm (IBM, Lenovo (optional)) 7.4 x 5.0mm (HP, Compaq) 7.4 x 5.0mm (Dell D series)