The ZT Series is found within OCZ's High Performance category and is significant due to its fully modular cabling system. Most PSUs that name themselves modular refer to a certain group of cables that are removable but the ZT boasts a completely modular configuration - even the motherboard ATX cable is detachable. The ZT series adopts 80 Plus Bronze certification and is available in following variants 550W, 650W, and 750W. Today we will be taking a look at the first model and lowest rated wattage - 550W. Ideal for those who are looking to build a gaming system with a powerful graphics card and typical assortment of drives and devices.