SilverStone Technologies RM21-304 3.5 x 2.5 in. Hot Swap Bays Micro-ATx 2U Rackmount Server Case

<b>Features</b><ul><li>Backplane Support for 4 port SAS / SATA drives and 6 Gb/s Mini-SAS SFF-8087</li><li>Supports four 2.5" / 3.5" SAS/SATA HDD / SSD</li><li>Includes three 80 x 15mm PWM fans</li><li>Independent drive status LED</li><li>Supports Micro ATx motherboards</li><li>Supports four low profile PCI / PCIe slots</li><li>Auto lock handle design easily secures to rackmount cabinet without screws</li></ul><b>Indicators</b><ul><li>Chassis Power LED x 1- Blue</li><li>Chassis HDD Access x 1- Green</li><li>Chassis LAN LED x 2- Green</li><li>HDD Tray</li><li>HDD Tray HDD Power LED x 8- Yellow</li><li>HDD Tray HDD Access x 8- Blinking green</li></ul><b>HDD Interface</b><ul><li>SAS-1 / SAS-2 / SAS-3</li><li>SATA-1 / SATA-2 / SATA-3</li></ul><b>Specifications</b><ul><li><b>Chassis Form Factor:</b> 2U</li><li><b>Mother Board:</b> Micro ATx (9.6" x 9.6"), Mini-ITx (6.7" x 6.7")</li><li><b>Drive Bay External:</b> 3.5" or 2.5" HDD/SSD hot-swap x 4</li><li><b>Drive Bay Internal:</b> 3.5" x 1, 2.5" x 1 (up to 15 mm), slim optical x 1 (up to 12.7 mm)</li><li><b>Cooling System:</b> 80 x 15 mm ball bearing Fan x 3, 4000±10%RPM</li><li><b>Power Supply:</b> 2U single or 2U redundant / PS2 (ATx) up to 160 mm deep and 86.3 mm height (not included)</li><li><b>Limitation of CPU Cooler:</b> 68 mm</li><li><b>Power Connector on HDD Backplane:</b> 4-Pin peripheral x 2</li><li><b>Expansion Slot:</b> Low profile PCI / PCIe x 4</li><li><b>Front Iinout &amp; Output Port:</b> USB 2.0 x 1, USB 3.1 Gen 1 Type-A x 1</li><li><b>Front Buttons:</b> Power On / Off, System reset</li><li><b>HDD Backplane:</b> 4 Ports SAS / SATA to Mini-SAS SFF-8087 x 1</li><li><b>Main Metal Thickness:</b> 1 mm</li><li><b>Capacity:</b> 18.3 Ltr</li><li><b>Dimension:</b> 16.93" x 3.48" x 18.9"</li></ul>- SKU: SVSTT1766