2 ms·
What's "ordinary fast charging"? USB-PD 3 or USB-PD 2 or the older Qualcomm QuickCharge? Because the older Qualcomm versions (very common, pre-dates USB-PD 3) u
by SAI_Peregrinus 4y ago
What's "ordinary fast charging"? USB-PD 3 or USB-PD 2 or the older Qualcomm QuickCharge? Because the older Qualcomm versions (very common, pre-dates USB-PD 3) uses the data lines to communicate and thus requires a multiplexer to disable the normal data connection for it to work. USB PD 2 works similarly to Qualcomm.
There are a lot of "USB-C" devices (including hubs) that only actually use USB 2.0 signalling, and don't support USB-PD 3.
- ajb 4y agoSorry, wasn't being clear. I just mean the USB standard maximum before PD, 1.5A at 5V Most hubs only support 500mA at max on a data port.
- SAI_Peregrinus 4y agoThat'd be USB BC 1.2 spec. The phrase to look for there is "CDP" or "Charging Downstream Port". There are quite a few options for this, though most hubs with USB-A ports do only provide Standard Downstream Ports (500mA max) and often there are only one or two CDPs on the hub (with the rest SDPs).