The Modular case was developed as there was no attractive rack mount case for Raspberry Pi applications available in the market.  Most all existing cases are "3d printed", or injection molded plastic cheap cases.  Not at the level of polish that Allonis needs for it's flagship myServer 6 controller.

Allonis's 1.5U Modular case is designed to be flexible for your control hardware needs.

Useable both in a standard 19" equipment rack with the included rack ears, or as a polished shelf mount AV device.

Certainly it is used for the myServer 6 automation controllers and is standard with most all commercial projects.  It also can be used for HomeAssistant, media players, and thousands of other Raspberry Pi projects.

The case has three bays where a variety of electronics can be securely mounted.

The most popular is a Raspberry Pi4 in the Left most bay (looking from the rear).  For this installation, the included case fan should be mounted in the Left / Rear fan location.  The fan's USB connector exits the case via the Pi4 rear panel slot inbetween the Bay 1 and Bay 2 rear panels.  No fan is required to be mounted on the Pi4.  Heatsinks are required to be mounted on the CPU, the RAM chip, the USB chip.  The fan will blow cool air across the heat sinks to dissapate the heat.  The case has holes drilled in the bottom and rear plate for the Pi4 HDMI daughterboard.  Typically the top HDMI plug is used for a primary monitor.

The Pi4 and Pi5 plates support Allonis's optional integrated UPS Hat that helps prevent power cycling that leads to software corruption.

Optionally, there is a hole in the Allonis logo where an LED can be hot glued.  The LED would be connected to the Pi4/5 GPIO ground and 3.3volt pins.  A resister would also need to be inline the positive cable to drop the voltage further.

There is also a Pi5 rear panel that is similar to the Pi4 mounting.

OrangePi5Plus rear panel is available.

Allonis's DSP444 and DSP4428 audio processors neatly mount in the middle and right bays.  There is a front mount that uses two scews to the bottom of the case, and  single screw to mount the processor to the rear plate.  Note: On some cases, it may be necessary to redrill the front bracket holes larger in the bottom of the case to clearance the slightly larger required countersunk screws (included).  The DSP's can mount in the left bay if you carefully drill holes for the front bracket (no holes exist in that location).  It is recommended to use the front left fan when the modular case is used for all three DSPs.  The fan's USB cable exits in the slot formed between bay 2 and 3 rear panels.  The USB would plug into either a nearby myServer controller (mounted in it's own modular case) or a standard USB-A power supply.

Allonis's HDMI capture devices (used for "myPreview" and "Customer Listening" features) are mounted in their white plastic cradles that screw to the bottom of the case.  The HDMI side of the devices are screwed to the modular case's rear panel(s).