Tak som si dal namahu to v USB2.0 pozriet. Dlzka "normalneho" A-B kabla nie je predpisana v metroch, ale v nanosekundach 7.1.16 Cable Delay The maximum total one-way signal propagation delay allowed is 30 ns. The allocation for cable delay is 26 ns. a v decibeloch 7.1.17 Cable Attenuation (v podstate -6dB na 400MHz). JW