Arduino Micro Power

I am using Arduino Uno USB powered 5V and GND pins to power a 80mA mechanical relay. Can i move my project to use Arduino Micro and still usb powered and still get 5v supply for external components or only i will get 3.3v?

You have a transistor to sink the coil current?
Looks like 5V is available on the Power Header.

arduino-micro-schematic.pdf (85.4 KB)

So the 5v pin is output power source in case of usb powerd mode and input regulated power in case of external powered mode?

Can you illustrate the function of component T1(FDN340P/PMV48xp) and the relation between vUSB, 5V and vIn pins?