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The ultra compact design of the DS321 makes this dual-bay RAID storage enclosure one of the smallest in the market, yet it still packs a punch when it comes to flexibility and performance. Installing 3.5” hard drives are quick and easy, thanks to its screw-less design. By incorporating USB 3.0 SuperSpeed technology, the DS321 is capable of delivering up to 10 times the speed of older USB connection while maintaining backward compatibility with the widely used USB 2.0 technology.

  • Configurable RAID function (Non-RAID, RAID 0, RAID 1)
  • Supports large volumes in excess of 2TB
  • USB 3.0 SuperSpeed connection
  • Backwards compatible with USB 2.0 Hi-Speed connection
  • Compact and screw-less design for easy HDD installation
  • Built-in low speed (2800RPM) fan for extra cooling
  • Security lock slot

Model No.
1 x USB 3.0 SuperSpeed port (compatible with USB 2.0)
aluminum housing with plastic panel
One or two 3.5” SATA HDD
20GB – 3TB per HDD
Supports large volumes in excess of 2TB
Data Transfer
USB 3.0 up to 5Gbps
USB 2.0 up to 480Mbps
Power Supply
External Power Adapter universal auto-switching (UL, cUL, CE, TUV approved)
Input: AC 100-240V, 50-60Hz
Output: DC +12V/3A
System Requirements(PC)
USB3.0:Windows XP/Vista/7
USB2.0:Windows XP/Vista/7
System Requirements(MAC)
USB 2.0:Mac OS 10.4 or above
182mm x 123mm x 81mm

In order for the computer to access volumes larger than 2TB, both hardware and operating system need to support large volumes (e.g. Windows Vista, Windows 7 or Mac OS 10.4 and above)
USB 3.0 is currently not available for Mac OS but the device can still be used with the older USB 2.0 connection.
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DS321 Manual
2,249 KB
DS321 firmware
Windows XP does not natively support hard drive capacity above 3TB. This firmware will enable Windows XP to support hard drives above 3TB.
Update method: Download this firmware and extract the files. Make sure DS321 is connected and detected by your system before running firmware update file.
520 KB

  • Q. Can I connect this device to a USB 2.0 host?
    A: Yes, this device is backwards compatible with USB 2.0.
  • Q. What file system should I choose to format my drive?
    A: This will depend on how you want to use the drive but in general, we recommend:
    • Windows Vista/7 NTFS
    • Mac OS X HFS+ (Mac OS Extended)
    • To use it on both PC and Mac FAT32 (single file size is limited to 4GB)
  • Q. How many drives can fail before I lose my data?
    A: For RAID 0, any drive failure will result in the data being lost. For RAID 1, more than one drive failure at the same time will mean the data can not be recovered anymore. For Non-RAID, only the data on the defective drive will be lost.

If the answers don't solve your problem, please email to support@silverstonetek.com. Thanks!
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