> With TB, you know exactly what are you getting. On the connector, there's a flash icon (meaning: thunderbolt) and a number (if > 3). That number says, which T

> With TB, you know exactly what are you getting. On the connector, there's a flash icon (meaning: thunderbolt) and a number (if > 3). That number says, which TB version it is. that's absolutely not true at all - for example, cables can be either active or passive, which is not denoted on the cable. Many devices will not work over a passive cable, because it does not provide power.