Match UPS, surge suppressor, SDS disposal, and humidity/ESD tickets; leave daisy-chain and water-on-lithium unused.
Match each environmental / power ticket to the right control. Leave daisy-chain and water-on-lithium unused.
CompTIA 4.5 separates UPS from surge, SDS disposal from dumpster habits, and humidity/dust/ESD from blind FRU swaps.
Still on the bench
UPS with battery runtime for brownout / short blackout — Surge strips do not ride through sag or outage. Servers and telco gear need a UPS.
Surge suppressor for spike protection (no battery needed) — Printers/monitors on a clean desk often need surge only — do not waste UPS VA on every lamp.
Follow SDS/MSDS for toner/battery disposal + PPE — Toner and lithium are not office trash. SDS dictates PPE and disposal path.
Raise humidity / control ESD in the dry closet; clear vents — Very low humidity invites ESD; blocked vents cook gear. Environment before blind part swaps.
Daisy-chain UPS into a power strip into another UPS — Daisy-chaining UPS/strips is a fire and warranty problem. Feed UPS from the wall circuit.
Dump water on a lithium pack fire 'like Class A trash' — Lithium and toner incidents follow SDS/fire class — not office-plant watering.