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Is there a difference between the cable I use to connect my MacBook Pro to the electrical charger and the cable I use to connect the MacBook Pro to an iPad? Both are USB C to USB C cables, aren't they?
MacBook Pro 16″, macOS 12.0
While USB-C connectors conform to a single standard, cables are not necessarily the same. USB-C cables can be wired to support different services - including one or more of Data, Power, Video, Thunderbolt and others.
Assuming that your cables are of Apple origin, they are very likely to be electrically the same - supporting Power and Data.
Thunderbolt3 cables, with a USB-C connector, are expensive - and the connector should be marked with (as you might guess) a thunderbolt symbol. Unless you have intentionally purchased a Thunderbolt cable, it is highly unlikely that you need to concern yourself with this type of cable.
While USB-C connectors conform to a single standard, cables are not necessarily the same. USB-C cables can be wired to support different services - including one or more of Data, Power, Video, Thunderbolt and others.
Assuming that your cables are of Apple origin, they are very likely to be electrically the same - supporting Power and Data.
Thunderbolt3 cables, with a USB-C connector, are expensive - and the connector should be marked with (as you might guess) a thunderbolt symbol. Unless you have intentionally purchased a Thunderbolt cable, it is highly unlikely that you need to concern yourself with this type of cable.
How to tell the difference between USB C cables
