PC Perspective has posted a review of the Enermax DXX 500W power supply

What makes the updated DXX units different is the inclusion of modular cables that now support PCI-Express, including the new 8-pin PCI-E 2.0 connector. The Liberty DXX 500W power supply is rated for a continuous maximum load of 500 watts at up to 40°C ambient air temperature and is cooled by a single 120mm fan. The main 24-pin power cable and +12V ATX/EPS CPU cable are hard-wired, while the remaining peripheral cables are modular.

Enermax Liberty DXX 500W Power Supply Review