Low slot

Low slots are a category of module slot found on ships in EVE. Generally, low slots contain passive modules which improve ship performance. Armor tanking modules occupy low slots. Some low slot modules share purposes with mid slot modules, but the details of their use differ.

This page is a collection of all the types of modules that use low slots.

Armor tank

These modules will repair, extend, and increase the resistance of your armor. Hardeners are the ideal if you can support them, followed by energized plating and finally resistance plating.

Armor Hardeners

These modules will increase your armor's resistance a great deal while using capacitor.

Armor Plates

These modules will increase your armor's total strength while greatly increasing your mass. Armor plates are great for a buffer tank.

Armor Repair Systems

These modules will repair you armor.

Energized Plating

These modules will increase your armor's resistance a moderate amount. Regenerative plating increases your armor by a percentage and does not affect your resistance.

Resistance Plating

These modules will increase your armor's resistance slightly for just a single MW of powergrid. Regenerative plating increases your armor by a percentage and does not affect your resistance.

Capacitor

These modules will increase the recharge rate of your capacitor. If you need capacitor and aren't shield tanking, power relays would serve you well. If you're actively shield tanking, you'll need to strike the right balance for you. Note that while flux coils increase your capacitor recharge rate by slightly more than power relays, they also decrease your capacitor capacity, and capacitor recharge rate is tied to capacitor capacity. This means that overall flux coils actually increase your recharge rate by less than power relays. Only use flux coils if you're actively shield tanking.

Capacitor Flux Coil

These modules will increase your capacitor recharge at the expense of total capacitor energy.

Capacitor Power Relays

These modules will increase your capacitor recharge at the expense of the amount of shield your shield booster restores.

Damage supplements

These modules will increase your DPS.

Ballistic Control Systems

These modules will increase your damage and rate of fire when using missiles.

Gyrostabilizers

These modules will increase your damage and rate of fire when using projectile turrets

Heat Sinks

These modules will increase your damage and rate of fire when using laser turrets.

Magnetic Field Stabilizers

These modules will increase your damage and rate of fire when using hybrid turrets.

Tracking Enhancers

These modules will increase your optimal range, accuracy falloff, and tracking speed when using any/all types of turrets.

EWAR

These modules will increase your targeting and reduce your susceptibility to ECM.

Signal Amplifiers

These modules will increase your total allowed targets, your maximum targeting range, as well as reducing time to lock.

Sensor Backup Arrays

These modules will increase your sensor strength.

Fitting

These modules will help you extend your power grid or CPU.

Auxiliary Power Controls

These modules will increase your powergrid by a fixed amount (ie. not as a percentage). If you're in a frigate, you'll generally want to use an auxiliary power control, since a percentage bonus will not give you as great a power grid increase as an absolute 15-18MW.

CPU Upgrades

These modules will increase your CPU by a percentage without penalty.

Power Diagnostic Systems

These modules will increase your powergrid by a percentage, as well as minor boosts to your capacitor and shield capacity and recharge. If you need an increase in your powergrid and don't need as much as a reactor control provides, the bonuses of the power diagnostic system is a great perk.

Reactor Controls

These modules will increase your powergrid by a percentage without penalty.

Propulsion

These modules will increase your velocity and/or agility. Injectors increase only velocity and reduce your ability to carry ammo, inertial stabilizers will increase your signature radius (and consequently your incurred damage) for a bit of agility. Nanofiber structures on the other hand, will provide both velocity and agility (very comparable to each individually) at the expense of structure. And honestly if you've reached a point where your structure is being hit, it doesn't matter how much you have. For further discussion on speed modules refer to the Guide on Stacking and Speed modules

Inertial Stabilizers

These modules will increase your agility at the expense of signature radius.

Nanofiber Structures

These modules will increase your velocity and agility at the expense of structure.

Overdrive Injectors

These modules will increase your velocity at the expense of cargo space.

Hyperspatial Accelerator

This unit increases warp speed and acceleration. No more than three Hyperspatial Accelerators can be fit to one ship.

Shield Tanking

These modules will increase the regeneration of shields. Power relays are great for passive shield tanking on Minmatar, as projectile weapons require no capacitor. Flux coils will deliver less recharge than they state, because of their reduction of total shields (remember that recharge time is independent of shield capacity, so as shield capacity is reduced, so is shield recharge). So with that said, shield power relays are the way to go for a passive shield tank, but neither should be used for an active shield tank.

Shield Flux Coils

These modules will increase shield recharge at the expense of shield capacity.

Shield Power Relays

These modules will increase shield recharge at the expense of capacitor recharge.

Misc

These modules did not fit into the above categories.

Cargo Expanders

These modules will increase your cargo capacity at the expense of velocity. Ideal for haulers and salvage/loot ships.

Damage Controls

These modules will give you a great deal of resist for your hull, and minor resistance increases for your armor and shields at the expense of very minor cap use. Great module to extend your tank.

Ice Harvester Upgrades

These modules decrease ice harvester cycle time at the cost of CPU.

Mining Upgrades

These modules will increase mining laser yield at the expense of CPU.

Reinforced Bulkheads

These modules will increase your hull at the expense of velocity. You don't want to use these, as structure tanking is ill-advised and you can surely find a better use for the slot.

Warp Core Stabilizers

These modules counter warp jammers while reducing targeting range and targeting speed. They are useful if you think you might get warp jammed and do not want to fight.