SilverStone’s RM420 is a higher performance storage server chassis designed for the professional storage environment. It is equipped with tool-less hard drive tray and hot-swappable fan assembly with motherboard support for up to Extended ATX form factor or SSI-EEB. There are also flexible mounts to accommodate most redundant 1+1 server power supplies and ergonomic, tool-less rail designs for easy rackmount integration. With an overall package designed for maximizing efficiency, flexibility, and durability, the RM420 is a great choice for professionals or data center engineers looking to build a storage server.

• Backplane support for 20 port SAS/SATA drives and SFF8087 x 5 with SGPIO
• Includes four hot-swappable 80 x 38mm PWM fans
• Supports E-ATX or SSI-EEB motherboard
• Supports profile PCI/PCIe x7 slots

Manufacturer:	SilverStone
Model:	SST-RM420
Chassis form factor:	4U
Motherboard:	E-ATX SSI-EEB (12”x13”)
Drive Bay External 3.5” hot swap x 20:
Internal:	Slim ODD x 1 or 2.5” x 1 and 3.5” x 1 or 2.5” x 1
Power Supply:	2U/3U/Mini redundant or PS/2 (not included)
Cooling System:	Hot-swap 80 x 38mm PWM fan x 4
Expansion Slot:	Standard profile PCI/PCIe x7 slots
Front I/O Port:	USB 2.0 x 2
Front buttons:	Power On/Off system reset alarm reset
HDD backplane:	20 port SAS/SATA to SFF8087 x 5 with SGPIO
Main metal thickness:	1.2mm
Dimension:	438.5mm(W) x 176mm(H) x 660mm(D) 17.26"(W) x 6.93"(H) x 25.98"(D)