0.5m, it looks good on paper, to connect its a mac dock TB. Yes, except that: 1 / It is really short when it comes to take one or two bends in cable (used with a Belkin Dock, which imposes a half turn to the cable, I am forced to stick my Macbook dock). 2 ° / The cable is not 0.5m. He barely 49 cm. Chipotage see: the measurement is taken from the end of a connector on the end of the other connector. In other words, if your device is more than 48cm: forget any connection hope. Imagine that your extension cords are measured this way. When we need 3m is to Shot to shot, no background of the bottom outlet of taking ... 3 / Price: delusional.