In Zenless Zone Zero, Drive Discs are an important way to boost your Agent's stats, especially since you can apply them to your W-Engine and gain bonuses based on the number of pieces you have equipped.
Ultimate Drive Disc Farming Guide in Zenless Zone Zero – Efficiency and Progression to the Endgame
Obtaining Drive Discs is a challenging feat though, and one that you must pass for those extra stat boosts. Here's the full list of them in ZZZ.
There are 12 types of Drive Discs available in ZZZ, with set boosts and bonuses for equipping two Drive Discs of the same type and four of the same type. You can only equip six Drive Discs at a time, meaning you can have an equip four bonus and an equip two bonus—and you'll need to choose carefully.
Here are all the Drive Discs in ZZZ and what they do on two and four counts.