1*4882a593SmuzhiyunWhat: /sys/class/leds/<led>/ports/<port> 2*4882a593SmuzhiyunDate: September 2016 3*4882a593SmuzhiyunKernelVersion: 4.9 4*4882a593SmuzhiyunContact: linux-leds@vger.kernel.org 5*4882a593Smuzhiyun linux-usb@vger.kernel.org 6*4882a593SmuzhiyunDescription: 7*4882a593Smuzhiyun Every dir entry represents a single USB port that can be 8*4882a593Smuzhiyun selected for the USB port trigger. Selecting ports makes trigger 9*4882a593Smuzhiyun observing them for any connected devices and lighting on LED if 10*4882a593Smuzhiyun there are any. 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun Echoing "1" value selects USB port. Echoing "0" unselects it. 13*4882a593Smuzhiyun Current state can be also read. 14