How many watts does a Wi-Fi Router / Modem use?

A Wi-Fi Router / Modem draws a steady 20 watts with no meaningful startup surge, since it has no motor to spin up.

Generators that can run this

• Generac GP2200i
  1,700 W run · 2,200 W start · ~$550
• Champion 2000-Watt Inverter (100692)
  1,700 W run · 2,000 W start · ~$450
• Honda EU2200i
  1,800 W run · 2,200 W start · ~$1,150