You can power 4 GL.iNet Comets in a few practical ways, but the cleanest setup is usually a single 5V/2A or better USB power source per unit, or a properly sized multi-port USB power supply. The Comet user guide shows the device expects power on its USB-C power input, and GL.iNet’s forum notes it can also be powered from standard USB in some setups, though the official input rating is 5V/2A.

Simple options

  • Four separate USB power adapters. Easiest and most reliable.
  • One multi-port USB power brick. Use a quality unit with enough total output for all four devices.
  • A powered USB hub or distribution box. Good if it can truly supply stable 5V power on all ports.
  • PoE for PoE-capable models. If you have the PoE version, Ethernet can carry power and data on one cable.

Sizing the power

A safe planning number is 5V × 2A per Comet , so for 4 units you should budget about 5V × 8A total at minimum, with some headroom above that. That means a supply rated around 5V/10A or higher is a sensible target if you want one central source. If you use a weaker supply, the devices may still work, but stability can suffer under load.

Best practical setup

  1. Use a quality multi-port USB-C/USB-A power supply with enough total amperage.
  2. Keep each Comet on its own cable.
  3. Avoid cheap splitters that don’t clearly state per-port output.
  4. If the Comets are mounted near the machines they control, separate wall adapters are often simplest and most dependable.

One detail to watch

If you power a Comet from a computer’s USB port instead of a dedicated adapter, GL.iNet’s forum says the Comet will go offline when that host powers off, which is fine for some mini-PC setups but not ideal for always-on remote access.

Recommended pick

For reliability, I’d use either:

  • 4 individual 5V/2A adapters , or
  • 1 high-quality 5V/10A+ multi-port supply with proper per-port current support.

TL;DR: Plan on 5V/2A per Comet , so a 5V/10A-class power source is the safest single-supply approach for 4 units.

Would you like me to sketch a wiring diagram for 4 Comets?