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UCTRONICS Pi Rack Pro for Raspberry Pi 4B, 19 1U Rack Mount, Support for 4 2.5 SSDs, Secure Shutdown, 0.96 Color Display for Raspberry Pi
For Raspberry Pi 4B Designed specifically for the Raspberry Pi 4B, the Raspberry Pi rack allows you to install up to 4 RPis, making it easy to build small Raspberry Pi clusters. 4 SATA shields No need for SATA-to-USB cables, just plug in 4 2.5 SSDs for additional storage capabilities. The board is also reserved for a fan interface, which supports external 2.54 2pin fans to cool the Raspberry Pi. Please note that the thickness of a 2.5 SSD cannot exceed 7mm.

Price is $290.00
Price: $289.99