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Item#: N82E16817576013

Mediasonic HFD1-SU3S2 2.5" & 3.5" Black SATA USB3.0 & eSATA ProBox 4-Bay Dock Station

  • 2.5" & 3.5"
  • USB3.0 & eSATA
  • Support single SATA HDD capacity up to 4TB (OS must support GPT to use value over 2TB)
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Mediasonic ProBox 4 Bay Dock for 2.5' / 3.5' SATA HDD - USB 3.0 SuperSpeed & eSATA (HFD1-SU3S2)
Changing HDDs frequently? Getting tired of running up and down for replacing HDDs in your old hdd enclosure? Mediasonic is now providing you a better solution for your need. Mediasonic HFD1-SU3S2 is a sleek looking design 4 bay docking station which allows you to install 2.5' or 3.5' hard disk drives and move files between your HDDs. It also has Smart Power Sync function for power saving when host computer turns off or standby.

Learn more about the Mediasonic HFD1-SU3S2




2.5" & 3.5"
AC Adapter
Internal Interface
External Interface
USB3.0 & eSATA
Maximum Capacity (per Bay)
Support single SATA HDD capacity up to 4TB (OS must support GPT to use value over 2TB)
Input Voltage: 100 - 240 VAC
4 Bay Docking Station

Input frequency: 50 ~ 60 Hz
Input current: 1.6A for 100V
Output voltage: 12V
Output current: 5A
Output watt 60W
AC Jack type (US Type)

Power On / Off button
Individual bay slot design support up to 4 different brand / capacity / model / form factor HDD running concurrently

Individual power controller for each dock. User can install or remove a single disk without interrupting the remain HDDs (only available via eSATA connection)

Special design sucker feet for steadily use on a desktop.

Smart Connect supports USB 3.0 / 2.0 or eSATA interface auto selection. (Device will detect and connect automatically with the interface connected. If both interface were connected, eSATA interface will be activiated).

Smart Power sync function supports PC and Toshiba REGZA TV.

PC and Toshiba REGZA TV can detect 4-LUN (Host eSATA need to support port multiplier function).


Operating Systems Supported
Windows XP / VISTA / 7
Mac OS 10.10.3 or later (Only for USB 2.0)


Package Contents
Main Device
External Power Adapter
Power Cord
USB 3.0 Cable (1M)
eSATA Cable (1M)
Warranty Card

Quick Info


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

Customer Reviews of the Mediasonic HFD1-SU3S2

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  • Brian W.
  • 1/4/2015 9:03:51 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month

4 out of 5 eggs

Pros: Easy to set up. Sleek look with low profile. Drives are easily inserted and slots contain flaps which aid in preventing dust. Low power usage, considering. Suction cup feet seem to work very well on smooth surfaces.

Cons: (May be Windows specific)

Using this dock with USB3 is not recommended. Your drives will continually disconnect at random intervals, regardless of any power settings you have made in Windows. I have since bought a PCI-E eSata card to use instead and I am no longer having drive connection issues.

Other Thoughts: I have no other issues with this product. I am considering buying another.

Did you find this review helpful? Yes No

  • Douglas R.
  • 2/5/2014 1:01:07 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

2 out of 5 eggsVERY disapointed

Pros: power buttons for each drive and for the unit as a whole.

Cons: puts drives to sleep not based on the power settings on my computer, no eject buttons to help with removal (as thermaltake bays have)

Other Thoughts: I own 3 Mediasonic proboxes, 1 USB 3.0 and 2 USB 2.0. They are fantastic but I really wanted a 4 bay unit I could swap drives easily and often (the other units are enclosed and you need to attach handles to the drives before inserting them).

So I was really looking forward to this and sadly it is a very frustrating piece of equipment. no matter how I set my power settings for when to spin down the hard drives it doesn't affect the ones in this unit. they spin down after just a few minutes. It cant be good for a drive to spin down and up again multiple times every hour. Literally almost every time I go to access a drive it needs to wake up! it is slow and frustrating and concerns me. even if I have both units attached at the same time, the probox works normally and this unit keeps doing the same thing.

last problem, when my computer goes to sleep, the probox goes to sleep and when I wake the comp all 4 drives show in explorer as before with no problem. but not this dock, each time the comp goes to sleep the drives all get removed and then reinstalled upon boot. programs close cause the drives are gone and sometimes the drives dont even get recognized properly again on start up.

VERY disappointing item. Love Mediasonic, but hate this dock. Buy the probox.

3 out of 3 people found this review helpful. Did you? Yes No

  • Sharon S.
  • 9/15/2013 11:45:46 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsNIICccceeee

Pros: Fast, simple---no downloads or disks---just drop HDD in and go.

Cons: None

Other Thoughts: Using a 8 core fx with windows 7.

2 out of 3 people found this review helpful. Did you? Yes No

  • R G.
  • 5/30/2013 4:45:59 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsDoes what it needs to do

Pros: Works as advertised.

Cons: The suction feet don't really suck much.

Other Thoughts: As stated in the documentation, with USB connections, any time you power on or off one HDD, all connected HDDs are disconnected briefly. This might be an issue if the user isn't aware of the limitation. This appears to be a common quirk for all 4-bay docks.

3 out of 3 people found this review helpful. Did you? Yes No

  • DAE M.
  • 11/11/2012 11:57:20 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsWorks

Pros: It works.

Cons: Slow transfer rate of 100mb/s
Loose drive slot.

4 out of 5 people found this review helpful. Did you? Yes No

1 out of 5 eggsWhy?

Pros: None

Cons: Why would anyone purchase this unit when you can buy the External enclosure from Mediasonic or Cineraid or Rosewill for less money and some of those are also tool-less and screw-less ?

Enclosures are quieter, have a fan to actively pass air over the drives, and are more secure and easier to carry as a portable unit, than this thing.

Other Thoughts: I give this a Zero.

0 out of 28 people found this review helpful. Did you? Yes No

  • Brian H.
  • 4/27/2012 9:36:28 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsUpdate

Pros: I did setup a eSata card on my machine and am happy to report alot better speeds in transfer so eSata is the way to go with this puppy.

Cons: Slow in USB mode and can't control each hard drive in USB mode only eSata with all of them resetting. The sound of the HDD spinning can give you a false impression that your drive maybe going "South"

Other Thoughts: I have noticed one thing you can hear the HDD working alot more then you would inside a computer or a enclosed box. Makes them sound like a percolator. Now i have heard this before and it was a sign that a hard drive was going "South" and it did. But i have 3 band new HDD different sizes by Western Digital and they all do it.

3 out of 5 people found this review helpful. Did you? Yes No

  • Brian H.
  • 4/5/2012 8:01:11 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsI wouldn't recommend this

Pros: easy to setup, works great in USB mode on Win & Pro 64bit, finds all my drives including a 3.0TB drive.. Over all very quiet and looks good, speed performance in USB 2.0 is good (think i moved 16gb and my average speed was 31mbps) yes i know still rather slow, but a improvement from my other tower.

Cons: What they lack to tell us is that you will have to buy a separate card to support 4 HDD in eSata. My new Acer tower has a eSata slot and will not support more then 1 HDD. From what i read about Mediasonic this is common with their products.

Oh in USB mode when you shut down 1 HDD you can't be transferring data on another drive or it will screw it up. It would appear that's only for eSATA. Found that out the hard way, Win 7 rescans all the drives.

Other Thoughts: I wouldn't recommend this unless you plan to buy a eSata card to get the better speeds. USB mode is ok if you do alot of work and swapping of drive this is for you BUT if you plan on dropping drives in and leaving them their for the long haul i don't suggest it. I also had for 2 or 3 weeks Mediasonic HF2-SU2S2 4 Bay box and that was returned as well very cheap products....

3 out of 12 people found this review helpful. Did you? Yes No

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Item#: N82E16817576013
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