SilverStone 20 Bay 4U Rackmount E-ATX Case (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 litres
  17.4" (W) x 6.89" (H) x 25.98" (D), 51.1 litres

Rail Sliding

Max. supported weight

80 kg

Rack cabinet mounting hole distance (Min. ~ Max.)

663mm ~ 915mm ±3mm

Net weight

2.48kg