Chest Equipment Mod

Chest Equipment Mods are a sub-class of Lair System Dispenser Items called Tactical Mods.

Overview

Chest Equipment Mods are a sub-class of Lair System Dispenser Items called Tactical Mods.
These White equipment Mods can be used to buff the attack, defense or other abilities of the player.

Additionally available are the Hearty and Power Efficiency mods originally introduced through various Time Capsules.

Related article links (10)

Chest Equipment Mods
Mod	Effect	Cost
Penetrating Strikes	Your attacks ignore 2% Defense and Toughness.	3 power cells
Core Strength	Gain an additional 2% damage.	3 power cells
Quick Healing	Gain an additional 2% bonus to Healing Received.	3 power cells
Reserve Tank	Increases your maximum Power pool by 5%.	3 power cells
Extended Supercharge	Using a Supercharge ability restores 5% of your max Supercharge. This effect may only occur every 30 seconds.	3 power cells
Enhanced Recovery	Blue baubles dropped by defeated enemies now restore more Power.	3 power cells

Usually merely chest equipment with item level 30 and up has a slot for chest equipment mods.
Originally all Tactical Mods had a cap of four items. Once you had four pieces of the same mod in your possession, the mod in question would disappear from the Dispenser until you delete or salvage the modded gear piece or overwrite it with another Tactical Mod. This was later removed with an update.