So much 500 series gear but so few racks for it. Let us introduce you to our junior 500 series rack with a built-in PSU. It's small and has only 4 slots but it has a big heart...I mean the powerful power supply, as it provides the load up to 4 Amperes! So don't worry about voracious modules which don't fit the 500 series standards, just use them and be sure, that the vents take warm air outside from your modules and PSU. This beast works in a wide power voltage range 200-250V(100-125V) and provides you the stabilized bus voltage +/-16V and +48V.