Bestcompu &reg; 20V 4.5A 90W 4Pin Replacement AC Adapter for Dell 2001FP R0423 ADP-90FB UltraSharp 2100FP LSE0202C2090 Dell 20.1" Flat Panel TFT LCD Monitor PA-9 Input: AC 100-240V, 50-60Hz-Output: DC 20V 4.5A-Power: 90W Connecter size: 4-Pin Tip (4 Prong) Note: Please make sure the DC output and tip size of ac adapter are accordant before you bid. Condition: Brand New Replacement LCD Monitors Adapter, works as genuine parts, 100% OEM Compatible!! Power cord included. Fast Shipping from CA, US.