What do the lights on the Philips Hue Bridge mean?

The Philips Hue Bridge has 4 glowing blue lights on top, with some symbols that allude to their functions - but what do they actually mean?

Combo Offer] Hue Lightstrip Plus 2m Base Kit + 1m Extension + Hue Bridge - Philips Lighting HK

Philips Hue Support – Hardware & Connectivity

Bridge 2.0] Power indicator light is the only one turned on : r/Hue

Philips Hue Bridge Lighting Control Hub 2nd Gen #3241312018A POWERS ON -UNTESTED 46677458478

How to set up your Philips Hue Bridge

Philips Hue Bridge White 458471 - Best Buy

WHAT'S IN THE BOX - Includes one White and Color Ambiance smart LED play light bar base kit with plug; Perfect for immersive gaming and TV watching

Philips Hue Smart Play Light Bar Base Kit, Black - White & Color Ambiance LED Color-Changing Light - 1 Pack - Requires Bridge - Control with App

Philips Hue Range/Distance Guide: How Far Away Can It Work?

Hue Bridge - Smart Control for your Lights

Bringing your Hue smart lights into Matter may not be a good move - The Verge

Philips Hue Bridge - Light Blinking No Internet Connection

The complete guide to Philips Hue: Bulbs, smart features and lots of colors - CNET