No, all USB-C cables do not have hardware to negotiate power (voltage and current). USB-C is simply a connector type like USB-A and USB-B. What you’re referring to is called USB-PD. This is when the charger and device “handshake” to agree on the optimal voltage and current, then adjust dynamically as needed. Yes extensions can be a problem for things like laptops or anything that can draw large current over high voltage. It’s really not any different than trying to run a table saw over a cheap extension cord meant for a lamp or a set of Christmas lights. If you’re using one of the usb extension cables to charge your phone, it’s fine.
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This is also why you should be very careful with what you plug into power strips. Your 15A circuit may be able to supply all the power being drawn from all the things plugged in, but the power strip may not. Do you want an electrical fire? Because that's how you get an electrical fire.
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Weird, I extended lightning cables fine.
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New mission to doom the world is to give away usb-c cables that will activate order 66 after random time.
Why can't the extenders pass along the same data the original cord is sending?
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Why is it designed like that? Why cant the devices on either side talk to each other about power requirements etc instead of going through an extra chip?
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Are they actually "not allowed" because the framework laptops all have these but they're inside a box and not a cable.
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