A:AnswerYou can get a USB C "Hub" that has additional ports like an Ethernet, HDMI, SD card reader, additional USB ports. They are less than $15 in most cases.
A:AnswerThe 9i that I have does have an ambient light sensor. Using Lenovo Vantage in the Settings area, select Input Accessories. Look for the Keyboard backlight section, and select Auto. Auto mode will adjust the backlight according to the ambient lighting and keyboard usage.
A:AnswerYes it has 1 USB port. It also has usb-c ports that you connect a dongle with multiple ports. I have one that has a SD card reader, 4 additional usb ports and and HDMI port.