Compatible Ac Adapter for IBM Thinkpad S30 Type 2639 2639 T20 Type 2647 2648 T21 Type 2647 2648 T22 Type 2647 2648 T23 Type 2647 2648 T30 Type 2366 2367 T40 Type 2373 2374 2375 Laptop Power Supply Cord Charger Plug 5 year warranty, with warranty card Over current, voltage protection 16v, power cord included low price,quality replacement to oem equipment compatible to orginal manufacturer equipment