Author of Admiral Shark's Keyboards, a project to document and preserve information on IBM/Lexmark/Unicomp/Lenovo/TGCS keyboards. Also a fan of IBM mainframe, midrange, terminals, POS, PCs, ThinkPads & typewriters. My ThinkPads: 240, 360CSE, 365E, 365ED, 365XD, 380Z, 570, 700, 701C, 750C, 760CD, A20m, A22p, A30p, L430, G40, G41, G50, R40e, R50e, R60e, R500, S30, S230u, SL510,T41, T42, T61, T400, T410, T430, Tablet 2, W530, W700, X41, X61T, X200T, X220, X230T and Z61m.