Cooling fan module for DFR-8110A frame. For high power consumption requirements, the DFR-8110A can be field upgraded with CFM-8110A cooling fan module, which is mounted on inside of door. Alternatively, DFR-8110A-C version comes direct from factory with cooling fan option already installed. To improve performance and reliability, PS-8102 has an on-board fan. For even better reliability, and high load conditions (>40 Watts), we recommend use of CFM-8110A cooling fan module. For applications that require greater heat dissipation, or where the module power consumption is greater than 40W, we recommend use of DFR-8110A-C frame (with cooling fan module installed), or installation of CFM-8110A cooling fan module, field upgrade option. When cooling fan module is installed, frame and PS-8102 can supply up to 80W of module power. Under these ventilated conditions, there is no requirement for extra spacing between the frames. DFR-8110A-C (or DFR-8110A with CFM-8110A option) can be stacked one on top of the other, feature that is highly desirable in densely crowded rack frame environments.