SilverStone RM21-304 ATX 2U 4 Bay Rackmount Case

SilverStone’s RM21-304 is a high performance storage server chassis designed for the professional storage environment. It is equipped with hard drive trays compatible with 2.5" or 3.5" drives and has fan assembly with motherboard support for up to Micro-ATX form factor. There are also flexible mounts to accommodate most 2U single / 2U redundant server, PS2 (ATX) power supplies. RM21-304 also has ergonomic, tool-less rail designs for easy rackmount integration. With an overall package designed for maximizing efficiency, flexibility, and durability, the RM21-304 is a great choice for professionals or data center engineers looking to build a storage server.
FEATURES:
Backplane support for 4 port SAS / SATA drives and 12 Gb/s Mini-SAS SFF-8087***
Supports four 2.5" / 3.5" SAS/SATA HDD / SSD
Includes three 80 x 15mm PWM fans
Independent drive status LED
Supports Micro ATX motherboards
Supports four low profile PCI / PCIe slots
Auto lock handle design easily secures to rackmount cabinet without screws

Warranty: 12 Month Return to Base Warranty

Specifications:
Chassis Form Factor 2U
Motherboard Micro ATX (9.6" x 9.6"), Mini-ITX (6.7” x 6.7”)
Drive Bay External - 3.5" or 2.5" HDD/SSD hot-swap x 4
Internal - 3.5" x 1, 2.5" x 1 (up to 15mm), slim optical x 1 (up to 12.7mm)
Cooling System 80 x 15mm ball bearing fan x 3, 4000±10%RPM
Power Supply 2U single or 2U redundant / PS2 (ATX) up to 160mm deep and 86.3mm height (not included)
Front I/O Port USB 2.0 x 1, USB 3.1 Gen 1 Type-A x 1
HDD backplane 4 ports SAS / SATA to Mini-SAS SFF-8087 x 1
HDD Interface SAS-1 / SAS-2 / SAS-3
SATA-1 / SATA-2 / SATA-3
Main metal thickness 1mm
Weight 6.3kg
Dimensions 430mm (W) x 88.5mm (H) x 480mm (D), 18.3L