Low power transfer rate via USB 10GBPS connection
Low power transfer rate via USB 10GBPS connection
I've been using the tower for occasional charging, but it's only delivering about 400mA. That seems too low for the 10Gbps port on my motherboard. Someone might know why? The original cable can handle 3A, but the charging speed is probably limited.
The USB 3.0 standard doesn't include a specific power delivery requirement for the port.
Devices typically won't attempt to increase data transfer when the connection doesn't recognize the protocol the phone requires, such as QC3, though this varies by brand. PC ports generally lack this feature, except for certain modified models with compatible ports.
Without the protocol, the device limits itself to the fundamental 500mA/2.5W specifications.
Typical advice is to steer clear of charging devices away from your motherboard. Most contemporary phones require a minimum of 30W during proper charging, with some reaching up to 80W. Even though the motherboard must support that power and more for the CPU and GPU, it doesn’t necessarily mean it’s wise to overload the USB controller ports. Opt for a dedicated USB fast-charger—it benefits both your phone battery and the motherboard.
It's entirely unrelated; the device doesn't pay attention if someone attempts to draw more than it can supply, cutting power if necessary. As noted, phones typically won't exceed the standard 500mA unless explicitly instructed otherwise. They usually only draw more when specifically told they can, and often only with the manufacturer's proprietary charger.
Because the charger uses USB-PD, which is what Switch can handle for higher power negotiation. Yet many phones lack PD support since they require the charger to communicate Qualcomm's QC3 protocol. It's a bit confusing that this shouldn't be an issue, but similar to the confusing naming around USB and HDMI, things are a bit unclear here.