Questions
Each answer starts with yes or no and then shows the working: gigabits needed against gigabits available, or volts × amps.
Video and displays
Yes, if…Can USB-C do 4K at 120 Hz?
It dependsHDMI 2.1 vs DisplayPort 1.4 for 144 Hz gaming
NoCan HDMI 2.0 do 4K at 120 Hz?
Yes, if…Can DisplayPort 1.4 do 4K at 144 Hz?
It dependsWhy won't my USB-C cable show video?
MaybeDo I need a new HDMI cable for 4K at 60 Hz?
YesDo the PS5 and Xbox Series X need an HDMI 2.1 cable for 4K 120 Hz?
Yes, if…Can HDMI 2.1 do 8K at 60 Hz?
YesCan Thunderbolt 4 run two 4K monitors?
MaybeDoes eARC need a special HDMI cable?
It dependsWhy is my USB-C hub stuck at 4K 30 Hz?
Charging
YesDo I need a special cable for 240 W charging?
Yes, if…What cable do I need for a 100 W laptop charger?