Tripp Lite
1111 W. 35th Street
Chicago, IL 60609
+1 (773) 869-1776
+1 (773) 869-1329

2-Bay USB 3.0 SATA Hard Drive Docking Station with Erase Function, 2.5 and 3.5 in. HDD and SSD

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

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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, Tripp Lite’s 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
Voltage Compatibility (VAC)100; 120; 125; 127; 200; 208; 220; 230; 240
External Power Supply Input Specs (V / Hz / A)100-240V~50/60Hz, 1.5A
External Power Supply Output Specs (V / A)12V/3A
External Power Supply Cord Length (ft.)6.4
External Power Supply Cord Length (m.)1.95
DC Barrel PlugOD: 5.5 x 2.1 x 10mm, Positive Pin, Negative Sleeve
External Power Supply Plug(s)NEMA 1-15P North America
LED IndicatorsRed (Read, Write, Power); Blue (Erase)
Material of ConstructionABS
Unit Dimensions (hwd / in.)2.44 x 15.33 x 4.38
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
Number of Ports2
Side A - Connector 1USB 3.0 B (FEMALE)
Side B - Connector 1(2) 22 PIN SATA + POWER (FEMALE)
USB SpecificationUSB 3.0 (up to 5 Gbps); USB 3.1 Gen 1 (up to 5 Gbps)
Driver RequiredNo
UASP Support  Yes
IP68 Rated  No
SATA VersionSATA I (1.5 Gbps); SATA II (3 Gbps); SATA III (6 Gbps)
CertificationsTested to FCC, RoHS, REACH
External Power Supply CertificationsFCC; UL; cUL
Product Warranty Period (Worldwide)1-year limited warranty

Questions & Answers

More Q&As may be available on the U339E02 model support page.

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

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+1 (773) 869-1776

Mon - Fri: 8 AM - 5:30 PM CST
+1 (773) 869-1234

Tripp Lite
1111 West 35th Street
Chicago, Illinois 60609
United States

+1 (773) 869-1111 Main
1 773.869.1329 Fax

Business Hours
8 AM - 5:30 PM CST

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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