4U 20-bay 2.5" / 3.5" HDD / SSD rackmount storage server chassis with Mini-SAS HD SFF-8643 12 Gb/s interface

■ Backplane support for 20 port SAS / SATA drives and 12 Gb/s Mini-SAS HD SFF-8643 + SGPIO

■ Supports twenty 2.5"/3.5" SAS/SATA HDD/SSD hot-swap trays

■ Ball bearing sliding rails included for simple server rack integration

■ Includes three 120mm x 38mm hot-swappable PWM fans

■ Auto lock handle for convenient fixation of chassis into rack cabinet

■ Supports ATX (PS2) / Mini Redundant PSUs*

■ Supports E-ATX or SSI-EEB motherboards

■ Supports 7 standard PCI / PCIe slots

■ Independent drive status LED

Distinctive exterior
Distinctive front panel features 20 x hot-swappable 3.5" bays or 20 x hot-swappable 2.5" bays with handle bars allowing for easy accessibility to the internal components
Storage device performance
HDD backplane supports 20 ports SAS / SATA drives and 12Gb/s Mini-SAS HD SFF-8643 x 5 with SGPIO
Excellent cooling capabilities
Utilizing the typical front-to-back directional airflow, RM43-320-RS comes pre-installed with three 120mm x 38mm hot-swappable PWM fans, designed to achieve a rapid heat dissipation effect that does not easily accumulate hot air inside

Internal configurations
Simple server rack integration
RM43-320-RS comes included with a sliding rail kit allowing the chassis to be fixated into server racks without extra purchase


Model No. SST-RM43-320-RS
Chassis form factor 4U
Motherboard SSI-EEB, SSI-CEB, Extended ATX, ATX, Micro-ATX, Mini-ITX
Drive Bay External 3.5" hot-swap x 20
Slim optical drive x 1 (up to 12.7mm)
Internal 2.5" x 2 (up to 15mm)
Cooling System Front --
Rear 80mm x 2 fan slots
Internal Hot-swap 120 x 38mm PWM ball bearing fan x 3
Power Supply ATX (PS2) / Mini Redundant*
Limitation of CPU cooler 148mm
Power connector on HDD backplane 4-Pin peripheral x 10
Expansion Slot Standard profile PCI / PCIe x 7
Front I/O Port USB 2.0 x 1, USB 3.1 Gen 1 Type-A x 1**
LED indicator Chassis
Power LED x 1: Blue
HDD Access x 1: Green
LAN LED x 2: Green

HDD Tray
HDD Power LED x 20: Yellow
HDD Access x 20: Blinking green
Front buttons Power On / Off, system reset
HDD backplane 20 ports SAS / SATA to Mini-SAS HD SFF-8643 x 5 with SGPIO
HDD Interface SAS III / II / I, SATA III / II / I
Main metal thickness 1.0mm ~ 1.2mm
Net Weight 16.2 kg
Dimension 442mm (W) x 175mm (H) x 660mm (D), 51.1 liters
17.4" (W) x 6.89" (H) x 25.98" (D), 51.1 liters
Rail Sliding
Max. supported weight 80 kg
Rack cabinet mounting hole distance (Min. ~ Max.) 663mm ~ 915mm ±3mm
Net weight 2.48kg
  * Please make sure the mounting holes of your Mini Redundant PSU matches the mounting holes on the rear panel of RM43-320-RS (See below diagram)
** RM43-320-RS’s USB internal cable is 800mm long, so if you are connecting an external enclosure to the USB3.1 port, we recommend using it with shorter cables to prevent performance loss.


  • Q&A

Describe Ver Size Download
RM43-320-RS High resolution photos 10,896 KB
RM43-320-RS manual V1.0 14,468 KB
RM43-320-RS backplane user guide V1.0 299 KB
RM43-320-RS Product Sheet V1.0 914 KB

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