IBM 16V 4.5A
Specification:
                                  Input: AC 100-240V, 50-60Hz
 
Output: DC 16V 4.5A
 
Connector: 5.5-2.5mm

                                  Compatible:
 
BM ThinkPad A Series: 
A20, A20E, A20M, A20P, A21, A21E, A21M, A21P, A22, A22E, A22M, A22P, A30, A30E, A30P, A31, A31P
A20m-2628, A20m-2633, A20p 2629, A21e-2628, A21e-2632, A21e-2655, A21m-2628, A31p-2654, A21m-2633, A21p-2629, A22e-2655, A22e-2664, A22m-2628, A22m-2629, A22m-2633, A22p-2629, A22e-2663, A22p-2633, A30-2652, A30-2653, A30-2654, A30p-2653, A31-2652, A31-2653, A31-2654, A31p-2653
 
IBM ThinkPad R series: 
R30, R31, R32, R33, R40, R40e, R50, R50e, R50p, R51, R51E, R52 
R30-2657, R30-2656, R30-2676, R31-2657, R31-2676, R31-2656, R32-2658, R32-2659, R32-2677, R40-2682, R40-2683, R40-2892, R40-2722, R40-2723, R40-2893, R40-2896, R40-2897, R40-2898, R40-2899, R40e-2684, R40e-2685, R40-2681, R50-1840, R50e-1842, R50e-2670, R50p-1832, R50p-1833, R50-1841, R50e-1834, R50-1831, R50-1829, R50-1830, R50-1836, R51-2895, R51e-1843, R51e-1844, R51e-1945, R51-1830, R51-1831, R51-1836, R51-1840, R51-1841, R52-1846, R51-2883, R51-2887, R51-2888, R51-2889, R51-2894, R51-1829, R52-1847, R52-1848, R52-1849, R52-1850, R52-1858, R52-1859, R52-1860, R52-1861, R52-1862, R52-1863, R52-1870, R52-1958
 

IBM ThinkPad i Series: 
i-1100, i-1200, i-1210, i-1211, i-1241, i-1251, i-1271, i-1300, i-1300 Series
i-1321, i-1340, i-1351, i-1351, i-1361, i-1391, i-1418, i-1420, i-1421, 1441, i-1442, 1460, 1480, i-1482, i-1483, i-1492, i-1500, i-1540, i-1541, i-1542, i-1560, i-1562, i-1592, i-1700, i-1720, i-1721, i-1800
 

IBM S-Series:  S30, S31
 

IBM ThinkPad T Series: 
T20, T21, T22, T23, T30, T31, T31P, T32, T33, T40, T40p, T41, T42, T42P, T43, T43P
T20-2647, T20-2648, T21-2648, T21-2647, T22-2647, T22-2648, T23-2647, T30-2366, T30-2367, T40-2374, T40-2375, T40-2376, T40-2378, T40-2379, T40p-2373, R40-2724, T40-2373, T40p-2374, T41-2373, T41-2374, T41-2375, T41-2376, T41-2378, T41-2379, T41p-2373, T41p-2374, T42-p2379, T42-2379, T42p-2373, T42p-2374, T42p-2376, T42p-2378, T42-2373, T42-2374, T42-2375, T42-2376, T42-2378, T43p-2678, T43p-2679, T43p-2686, T43p-2687, T43-1871, T43-1872, T43-1873, T43-1874, T43-2679, T43-2686, T43-2687, T43p-2668, T43p-2669, T43-1875, T43-1876, T43-2668, T43-2669, T43-2678
 

IBM ThinkPad X Series: X20, X21, X22, X23, X24, X30, X31, X40, X41
 

IBM ThinkPad E Series: E530
 

Earlier IBM ThinkPad Models: 
130, 235, 240X, 240Z, 390, 240X, 240Z, 340, 345, 360, 370, 380, 365, 365C, 365CD, 365CS, 365CSD, 365E, 365ED, 365X, 365XD, 380, 380D, 380D-MMX, 380E, 380ED, 380XD, 380Z, 385, 385CD, 385D, 385D-MMX, 385ED, 385XD, 390X, 535, 550, 560, 560C, 560E, 560X, 560Z, 570, 570E, 600, 600A, 600E, 600X, 701, 701C, 701CS, 770, 770E, 770ED, 770X, 770Z