The TP-LINK RE300 router has Gigabit WiFi, N/A ETH-ports and 0 USB-ports.
How to hard reset (factory reset) RE300 :
You can hard reset your RE300 with ways bellow
Use web interface :
Open a browser and navigate to the web interface of the router (see default settings below)
In the menu look for System tools and under there find the Factory defaults option
On the Factory defaults page click on the Restore button to perform the reset.
Use RESET/WPS button :
Have the unit powered on
Press and hold the reset (sometimes reset/WPS) button for 10 seconds with a paperclip or other sharp object.
When the SYS led start blinking quickly release the reset button and wait for router to boot back up.
RE300 default Login & Password, factory settings :
Default Gateway IP: 192.168.0.254
Default subnet mask: 255.255.255.0
Default DNS server: 192.168.0.254
RE300 router specifications :
RAM: 128 MiB
Custom firmwares: None
WiFi: Gigabit (abgn+ac)
WiFi throughput: n/a