4-Bay 2.5”/3.5" SATA III HDD/SSD Hardware RAID Storage  


2 Thunderbolt™ 2 ports, Hot-Swappable Drive







Thunderbolt 2


The fastest, most versatile I/O in any desktop. Of any size.




Thunderbolt 2 technology in ST4-TB is phenomenally fast. The two Thunderbolt 2 ports on ST4-TB features dual 20-Gbps channels for data transfer and that’s up to four times faster than USB 3. But beyond speed, Thunderbolt gives you unprecedented expansion capabilities. You can daisy-chain as many as six Thunderbolt devices to a single port. And since Thunderbolt is based on Display Port technology, Mini Display Port devices like Apple LED Cinema Display can plugs right in, too.

The ST4-TB is equipped with four configuration modes to suit every need


The ST4-TB has four built-in disk configuration modes: RAID 1 (Safe Mode), RAID 0 (Speed Mode), RAID 10,JBOD (Two Independent Volumes) for you to choose according to your needs.


The RAID 1 function provides fully automatic backup that ensures data security.


RAID 0 functionality increases storage speed and performance.


RAID 10 is a RAID configuration that combines disk mirroring and disk striping to protect data.


JBOD function provides two independent disk data access convenience.


RAID 0 functionality increases storage speed and performance


The new ST4-TB is equipped with RAID 0 storage mode, which enables user to attain up to 724MB/s read speed with ST4-TB's Thunderbolt transmission interface. Whether it is used for searching and editing photo galleries, or video editing and synthesis, it promises to deliver a smooth and easy operation.



Stylish and rugged


The ST4-TB has a sleek exterior design that’ll never go out of style when placed next to your Mac. It’s also built tough with three millimeter thickness aluminum to shield the enclosed drives durably and to dissipate the heat created by the drives faster for the drives to work comfortably.


Removable design, use multiple hard drives flexibly


The ST4-U5 is a quadruple drive storage enclosure system that supports the latest 3.5" and 2.5" SATA and SAS hard drives to deliver high-capacity data storage solutions. Featuring flawless structural design, optimized internal configuration, and a durable aluminum casing to protect your internal drives, the ST4-U5 is perfect for creative and highly mobile professionals.

Thunderbolt 2


The ultimate all-in-one demands the most advanced I/O technology. Each tiny Thunderbolt port lets you expand the capabilities of your Mac for connecting high performance peripherals, transfer data at high speed, or even daisy-chain multiple devices. And the new iMac with Retina 5K display has Thunderbolt 2 built-in, delivering twice the bandwidth — up to 20 Gbps — for the fastest data transfers.


More ST4-TB3 product information  >>>>


To help you complete your photography projects


With two ultrafast Thunderbolt 2 ports, you can build a photo studio around MacBook Pro and T4-TB. Or take them with you and import thousands of RAW images on location — up to six times faster than on a standard MacBook Pro. Once your photos are on your computer, editing in Aperture is faster and more responsive than before.
ST4-TB's RAID 0 mode lets you quickly browse large image libraries from external storage. So you have instant access to any photo in your library.



Environmentally friendly.


ST4-TB is made from highly recyclable aluminum and it is also free of many harmful toxins which commonly present in the desktop computer manufacturing process.


Advanced power management.


ST4-TB uses energy-efficient hardware components that work hand in hand with the Mac system to conserve power. It spins down hard drives and activates sleep mode after a period of inactivity.



Product View


Model No ST4-TB (Silver) / ST4-TB-B (Black) 
Interfaces Thunderbolt 2 Port x 2 ( up to 20 Gbps )
Compatible Drive 4 x 3.5”/2.5" SATA III HDD/SSD ( up to 6 Gbps )
Storage Mode JBOD - Independent Mode
RAID 0 - Speed Mode
RAID 1 - Safe Mode
Operating System 
Windows 7 (64-bit), Windows 10 (64-bit) and later, macOS 10.13 and later*
For PC, Windows 10 (64-bit) and later is recommended
Cooling System 9 cm Low noise fan
Electrical and
* Line voltage: 100-240V AC
* Frequency: 50Hz to 60Hz, single phase
* Maximum continuous power: 150W
* Operating temperature: 32° to 104° F (0° to 40° C)
* Storage temperature: -4° to 116° F (-20° to 47° C)
* Relative humidity: 5% to 95% noncondensing
Certification CE/FCC
Size and Weight Height: 166 mm   Width: 124 mm    Depth: 248 mm    Weight: 3.4 kg
Product Code EAN:4711132864595      UPC:884826503804
Package Accessories * ST4-TB x 1  (with removable drive tray enclosed x 4)
* Thunderbolt Cable x 1
* Power Cord x 1
* Accessory kit
* Quick Installation Guide
Remarks * Please be advised the Marvell Storage Utility (MSU) has not been updated to
support macOS Catalina yet. Please remain on macOS Mojave until an updated is 


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ST4-TB (EOL) Download

Win OS Driver
Win OS MSU Utility
Mac OS 10.10.x & Lower Ver. MSU Utility
Mac OS 10.11.x MSU Utility
MSU for macOS 10.15.x or above

ST4-TB (EOL) Question & Answer

  • Q1Frequently Asked Questions
  • Q2Can the Mac Pro use ST4-TB to connect a monitor?
  • Q3Does the MSU and driver of this product support the latest macOS 10.15.x (Catalina)?