The Zeus ST75ZF 750W power supply enclosure is painted matte black and has a single 80mm exhaust fan on the front-side. Previous Zeus models have the fan located on the back like most other generic power supplies. Mounting the fan on the front of the power supply reduces the overall sound output from the power supply and helps to exhaust the hot air from the PC enclosure.
The fan speed is automatically controlled by the internal temperature controller and is quite silent.
On the first picture you can see the v2.0 lable, which is also present on the PSU box.
The open grill on the back allows the exhaust air to exit the power supply with minimal resistance. The LED indicator beside the On-Off rocker switch shows the status of the power supply during operation: Orange = standby mode, Green = Normal operation and Red = Fault.
ST75ZF Dimentions
As you can see, from the picture below, the Zeus ST75ZF is 180mm long. This can cause some installation issues depending on what case you have.