Check the listing for details. SilverStone RM43-320-RS 4U 20-bay 2.5" / 3.5" HDD / SSD Rackmount Storage Server. Condition: New. Listed at 1092.50 USD. SilverStone RM43-320-RS 4U 20-bay 2.5" / 3.5" HDD / SSD Rackmount Storage Server Manufacturer:Silverstone Part Number:RM43-320-RS 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 HDD backplane supports 20 ports SAS / SATA drives and 12Gb/s Mini-SAS HD SFF-8643 x 5 with SGPIO 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.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 Supports ATX (PS2) / Mini Redundant PSUs* Supports E-ATX or SSI-EEB motherboards Supports 7 standard PCI / PCIe slots About the Manufacturer Founded in 2003, SilverStone is an established leader in its field, with an elite team of engineers; they started their quest of providing products that create inspirations. They continue to pride themselves in providing the highest level of standards in designing and manufacturing computer enclosures, power supplies, and accessories. Bulk Pricing For customers who wish to order large quantities of this item and would like to receive bulk pricing, please contact us directly and we will provide the best price possible.