General computer cases in the "Sun N-series"manufactured for the consumer market do exist, typically as micro-ATX (m-ATX) cases that often come with a built-in 230W power supply unit (PSU). 
 

• Series: N Series
• Material: SPCC steel with a plastic front panel
• Form Factor Support: M-ATX 
• PSU: Often includes a 230W built-in ATX PSU
• Drive Bays: Typically one HDD position and one SSD position
• I/O Ports: Usually 2x USB 3.0 ports and HD audio
• Cooling: Often includes 2X 12cm rear fan