The PSU is checking that the USB-C CC line is pulled down with a valid resistor value before enabling the output. It is how a USB-C device signals to power source that it wants power. The USB-C PSU for my laptop does the same. Your other PSU doesn't check and always has its output enabled.
The splitter and tester are presumably not passing CC through or have their own pulldown which is interfering/wrong. Your other PSU doesn't check and always has its 5V output enabled.
The splitter and tester are presumably not passing CC through or have their own pulldown which is interfering/wrong. Your other PSU doesn't check and always has its 5V output enabled.
Statistics: Posted by trejan — Sun Mar 24, 2024 8:22 pm