PoE2
Second Wind
Support
Cost Multiplier: 150%
Requires: Level 1
Support Reqirements: +5 Dex
Supports skills with cooldowns, giving them extra uses of that cooldown.
Cannot support triggered skills.
Supported Skills have 50% less Cooldown Recovery Rate
Supported Skills have twice as many Cooldown Uses
Place into a Skill's Support Gem socket in the Skills menu to apply its effects to that Skill. You cannot have multiple copies of the same Support Gem socketed at the same time.
PoE1
Second Wind Support
Support
Level: (1–20)
Cost & Reservation Multiplier: 200%
Requires: Level (31–70), (33–70) Dex, (23–48) Int
Supports skills with cooldowns.
Cannot support triggered skills.
Supported Skills have (5–24)% reduced Cooldown Recovery Rate
Supported Non-Instant Skills have +1 Cooldown Use

Additional Effects From Quality:
Supported Skills have (0–5)% increased Cooldown Recovery Rate
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.