PoE2
Close Combat
Support
Attack
Cost Multiplier: 140%
Requires: Level 1
Support Reqirements: +5 Dex
Supports Attacks, causing them to deal more damage to enemies based on how close they are to you.
Supported Skills deal 25% more Attack Damage to enemies within 1 metre of you, scaling down to no bonus at 3.5 metres or further
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
Close Combat Support
Support
Melee, Attack, Duration
Level: (1–20)
Cost & Reservation Multiplier: 140%
Requires: Level (18–70), (14–48) Str, (21–70) Dex
Supports melee attack skills. Cannot support skills which create minions.
Supported Skills deal up to (25–39)% more Melee Damage to Enemies, based on proximity
Supported Skills grant Combat Rush on Hit
Combat Rush lasts 2 seconds or until you use a Travel Skill
Combat Rush grants 20% more Attack Speed to Travel Skills not Supported by Close Combat
Supported Skills can only be used with Axes or Swords

Additional Effects From Quality:
(0–10)% increased Damage with Hits to Close Range Enemies
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.