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Black dual-bay SATA drive dock with one-touch clone button, 144 x 115 x 59 mm

Vantec

Vantec NexStar JX NST-D258S3-BK dual-bay SATA drive enclosure

SKU CH-Q4N4-BBSXG

Dual-bay SATA dock clones drives sector-by-sector without a computer and connects via USB 3.2 Gen1 for 20 TB per bay access

  • Size144 × 115 × 59 mm
  • Drive interfaceSATA I/II/III
  • External connection1:1 drive duplication
  • Supported drivesDual HDD
  • Bay count2
  • Max capacity per bayUp to 20 TB per bay
  • Standalone sector-to-sector cloning without a computer
  • One-touch duplication starts with a single button press
  • USB 3.2 Gen1 dual-bay dock for fast drive access
  • Supports 2.5 in and 3.5 in SATA drives up to 20 TB each
  • Compact 144 x 115 x 59 mm ABS chassis weighs 418 g

Standalone duplicator for two SATA drives

The Vantec NexStar JX NST-D258S3-BK is a dual-bay dock that clones SATA drives sector-by-sector without a host computer. It accepts 2.5 in and 3.5 in hard drives or SSDs up to 20 TB per bay and runs from a 12 V DC adapter. One-touch duplication starts with a single button press.

Suits archivists and technicians who need offline

Ideal for users who duplicate drives in any combination of HDD and SSD without installing software. Not suited for workflows that require hardware RAID, encryption acceleration, or network-attached storage features. Buyers who need active cooling for sustained heavy workloads should consider a fan-equipped enclosure.

USB 3.2 Gen 1 host interface for dock mode

When connected to a PC or Mac the unit acts as a dual-bay SATA dock over a single USB 3.2 Gen 1 link, supporting Windows 7 through 11, OS X 10.6 or later, and current Linux distributions. The standalone cloning function operates independently of this connection.

How it compares

Measured against everything we stock in External Drive Enclosures, at today’s prices. Recalculated every night.

Price $74.99
Pricier than about 73% of the 821 comparable items (median $30.99).

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Specifications

Product
Brand nameVANTEC
Product lineNexStar JX
Model nameNST-D258S3-BK
Part numberNST-D258S3-BK
Product colorBlack
Product typeDock
Storage
Drive interfaceSATA I/II/III
Supported drivesDual HDD
Bay count2
Max capacity per bayUp to 20 TB per bay
Ports & slots
External connection1:1 drive duplication
Power
Power adapterYes
Power details12VDC, 3A
Size & build
Size144 × 115 × 59 mm
Main materialHeavy duty ABS
Product dimensions144 × 115 × 59 mm
Product weight418 g
Compatibility
Supported operating systemsWindows OS (7/8/10/11) / OS X 10.6 or later / Latest Linux OS
In the box
In the boxNexStar JX Dual Bay Dock
USB cable
Universal Switching AC adapter
Quick Guide
More details
Cooling fansNo

Questions about this item

Will the NST-D258S3-BK clone a 3.5 inch SATA drive from my older desktop onto a new 2.5 inch SSD?

Yes, the dock accepts both 2.5 and 3.5 inch SATA drives in either bay and can duplicate HDD to SSD, SSD to HDD or any other combination without a computer.

How do I know the sector-by-sector clone has finished correctly on the NexStar JX?

Press the clone button to start the one-touch duplication; the LED indicators show progress and confirm when the standalone sector-to-sector copy is complete.

Does the NST-D258S3-BK package include the 12 V power adapter and USB 3.2 Gen1 cable, or must I buy them separately?

The enclosure ships with a 12 VDC 3 A AC adapter and a USB 3.2 Gen1 cable for host connection; drives are not included.

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