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SANS DIGITAL MobileSTOR MS4UM+ JBOD (Hard drives are accessed individually) 4 x Hot-Swappable 3.5" Drive Bays USB 3.0, eSATA 4-Bay eSATA Port Multiplier and USB 3.0 JBOD Tower (Silver)

  • SATA
  • 4 x Hot-Swappable 3.5" Drive Bays
  • JBOD (Hard drives are accessed individually)
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The MobileSTOR MS4UM+ is a compact JBOD tower utilizing the latest SATA port multiplier and USB 3.0 technology, where one single eSATA cable or USB 3.0 cable connects to four SATA hard drives. Four hard drives can be access to the computer individually, providing instant storage expansion with ease. Designed with easy installation in mind, the trayless MS4UM+ allows for instant setup by simply inserting the hard drives after opening the protective ventilating cover. Both USB 3.0 and eSATA provide high performance transfer rate. USB 3.0 port is now available with the various systems while older USB 2.0 port is backward compatible. Optional USB 3.0 controller card is available. Port Multiplier technology is widely available in current eSATA port, including home sever, laptop and personal computer, and an optional port multiplier supported eSATA controller can be purchased for added performance and functionality, such as RAID application. MS4UM+ is supported in Windows, Linux and Mac, including storage expansion, home server applications as well as personal data backup. Four hot-swappable hard drives slots are behind the front cover to allow for easy trouble shooting and hard drive replacement. The newly trayless design allows for easy installation. With adjustable cooling fan design, and high performance transfer rate to support various audio and video formats, MS4UM+ is the ideal storage tower for high-end computing.

  • newegg eSATA and USB 3.0 Featuring eSATA interface with Port Multiplier technology and USB 3.0 port, the 4-bay SANS DIGITAL MS4UM+ allows you to access four SATA hard drives via a single eSATA or USB 3.0 cable. This raid enclosure also supports multiplier enabled RAID adapter for additional RAID application. With the latest 3TB hard drive support, the 4-bay SANS DIGITAL MS4UM+ can achieve up to 12TB in storage capacity.
  • newegg Efficient and quiet cooling The preinstalled 3” ball bearing fan features auto / manual adjustable speed for quiet and efficient cooling.
  • newegg Multiple Platforms support The SANS DIGITAL MS4UM+ supports PC, Linux and MAC OS, including Windows 7 and Snow Leopard/Lion. Cooling fan, hard drive and power LEDs show you the status at a glance.

Learn more about the SANS DIGITAL MS4UM+



General Spec

External I/O
USB 3.0, eSATA
RAID Levels
JBOD (Hard drives are accessed individually)


3.5" Drive Bays
4 x Hot-Swappable

System Management

OS Supported
Supports PC, Linux and MAC OS, including Windows 7 and Snow Leopard/Lion OS.

Mechanical Spec

Power Supply
Input: AC 100-240V, 50Hz/60Hz
Output: DC +12V/5A
Max. Power: 60W

General Spec

5.3"W x 7.0"H x 9.7"D
4.5 lbs.
USB 3.0 (backward compatible with USB 2.0)
eSATA (via Port Multiplier)

Form Factor: Compact Tower

Drive Interface: 4 x 3.5" SATA

Cooling Fan: 3" Ball Bearing Fan

Status Indicators: Cooling fan status, hard drives status and power LEDs

Trayless design and dust-proof front cover

* Port Multiplier supported eSATA port required for eSATA port. Please see Sans Digital eSATA port multiplier controller card selections.
** SATA/eSATA port require support port multiplier in order for your computer to recognize multiple hard drive when use with eSATA. Port multiplier supported eSATA port is required.


Package Contents
Power Cord & Power Adapter
USB 3.0 Cable
eSATA Cable
8 x HDD screws
4 x HDD Handle
Screw Driver
Quick Installation Manual

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the SANS DIGITAL MS4UM+

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  • Shane O.
  • 5/22/2013 8:52:15 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsMusical Hard Drives

Pros: Worked okay for about 2 months

Cons: Now all I do is swap drives around until I get one of them to get recognized by the system.

Other Thoughts: I don't swap drives often, I don't think I touched the drives until recently when it wouldn't see any of the disks. I pulled one out and all of them were recognized. Now to get data off of one disk I pop it into each slot to see if i can find one that will see it. JUNK. This just pushed me to buying parts to build a nas.

Manufacturer Response:

Thank you for purchasing Sans Digital Product.

If the hard drives is swappable around and able to see the data, but not following to specific slots, it is more than likely the problem is on the hard drives. Please contact us to diagnose the issues and we can confirm if the problem is the unit or the hard drives.

If you are having problem on the unit, please contact us by calling 1-800-980-1988 for technical support and our engineer will try to resolve it over the phone. You can also contact us at for e-mail supports.

1 out of 1 people found this review helpful. Did you? Yes No

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