10000 Woodward Avenue
Woodridge, Illinois 60517
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+1 (773) 869-1329
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Connects 2 SATA hard drives to your laptop or computer's USB port for extra storage, one-touch drive formatting and fast data transfer.
  • Connects dual SATA HDD (hard disk drives) or SSD (solid state drives) to your computer
  • Supports 2.5 in. SATA III, II and I drives up to 2 TB; 3.5 in. SATA drives up to 14 TB
  • Supports USB 3.0 speeds up to 5 Gbps to ensure fast data transfers
  • Reads data up to 70% faster when connected to UASP host controller
  • One-touch erase feature formats 2 hard drives with no computer connection needed
  • 1-year limited warranty


Connect 2 SATA External Hard Drives to Your Computer’s USB Port for Extra Storage
When the hard drive on your laptop is not large enough to hold all your photos, videos, music and documents, U339-E02 is the solution. This dependable docking station allows you to connect two SATA HDD or SSD drives to any device with a USB port, including MacBooks, Ultrabooks and Chromebooks. It supports 2.5-inch SATA III, II and I drives up to 2 TB, 3.5-inch drives up to 14 TB, and will support higher capacities as they become available.
Transfers Data at Fast USB 3.0 Speeds with UASP Support
This dock supports USB 3.0 data transfer rates up to 5 Gbps, which is 10 times the speed of USB 2.0, to give you more data storage, retrieval and backup capacity. It reads data up to 70 percent faster and writes up to 40 percent faster when connected to a UASP-enabled host controller. The U339-E02 is backward compatible with previous USB generations, allowing you to use it with older equipment.
Clears the Content of 2 SATA Drives at the Same Time
An Offline Erase function reformats two SATA hard drives simultaneously at the touch of a button. A red LED blinks to indicate the Erase function is being performed. Four blue LEDs indicate progress, letting you know at a glance when the disks are completely erased. Note: The Erase function will not work if the U339-E02 is connected to a computer or any other source via USB cable.
Just Plug and Play for Immediate Use Right Out of the Package
No software or drivers are required. The U339-E02 is compatible with all USB-enabled operating systems, including Windows, Mac and Linux. The included power supply with six-foot cord and NEMA 1-15P plug connects to a convenient wall outlet, PDU or UPS system.

System Requirements

  • 2.5 in. or 3.5 in. SATA HHD and/or SSD
  • Device with USB-A port (USB 3.0 required to achieve USB 3.0 data transfer speeds)
  • Windows, Mac or Linux operating system

Package Includes

  • U339-E02 2-Bay USB 3.0 SATA Hard Drive Docking Station
  • External power supply with NEMA 1-15P plug (Input: 100–240V, 50/60 Hz, 1.5A; Output: 12V 3A)
  • USB 3.0 A-to-B cable, 3 ft.
  • Owner’s manual
RoHS compliant


UPC Code037332248176
AC Power Adapter Plug(s)NEMA 1-15P North America
AC Power Adapter Input Specs (V / Hz / A)100-240V / 50/60Hz / 1.5A
AC Power Adapter Output Specs (V / A)12V / 3A
AC Power Adapter Cord Length (ft.)6.4
AC Power Adapter Cord Length (m)1.95
Voltage Compatibility (VAC)100; 120; 125; 127; 200; 208; 220; 230; 240
Power Source TypeAC Adapter
DC Barrel PlugOD: 5.5 x 2.1 x 10mm, Positive Pin, Negative Sleeve
Number of Ports2
Side A - Connector 1USB 3.0 B (FEMALE)
Side B - Connector 1(2) 22 PIN SATA + POWER (FEMALE)
LED IndicatorsRed (Read, Write, Power); Blue (Erase)
Material of ConstructionABS
Unit Dimensions (hwd / in.)2.440 x 15.330 x 4.380
Unit Packaging TypeBox
Unit Weight (lbs.)0.9
Operating Temperature Range50° to 122°F (10° to 50°C)
Storage Temperature Range32° to 149°F (0° to 65°C)
Relative Humidity10% to 80% RH, Non-Condensing
USB SpecificationUSB 3.0 (up to 5 Gbps); USB 3.1 Gen 1 (up to 5 Gbps)
UASP Support  Yes
SATA VersionSATA I (1.5 Gbps); SATA II (3 Gbps); SATA III (6 Gbps)
Driver RequiredNo
External Power Supply CertificationsFCC; UL; cUL
Product ComplianceRoHS; REACH; FCC (USA)
Product Warranty Period (Worldwide)1-year limited warranty

Questions & Answers


USB Cables

  Model Number Description
USB 3.2 Gen 1 SuperSpeed Device Cable (A to B M/M), 3 ft. (0.91 m) U322-003 U322-003 USB 3.2 Gen 1 SuperSpeed Device Cable (A to B M/M), 3 ft. (0.91 m)
USB 3.2 Gen 1 SuperSpeed Device Cable (A to B M/M), 6 ft. (1.83 m) U322-006 U322-006 USB 3.2 Gen 1 SuperSpeed Device Cable (A to B M/M), 6 ft. (1.83 m)
USB 3.2 Gen 1 SuperSpeed Device Cable (A to B M/M), 10 ft. (3.05 m) U322-010 U322-010 USB 3.2 Gen 1 SuperSpeed Device Cable (A to B M/M), 10 ft. (3.05 m)

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 773-869-1776 or email