The versatile RM133 series 1U chassis are optimized for general purpose, high performance server applications. The great advantage of modular HDD cage design supports choice of ten hot-swap 2.5" or four hot-swap 3.5” hard drive bays. It facilitates optimal performance and power efficiency, and minimizes service downtime with tool-less installation of top cover, HDD tray, PSU, fan and PCI-e card exchange.