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Sans Digital 4 Bay eSATA Port Multiplier JBOD Tower Storage Enclosure (no eSATA Card bundle) TR4M+BNC

+ $5 off w/ promo code 1226BXWCA21, limited offer

In stock. Limit 5 per customer.

  • SATA 150 & 300
  • 4 x Hot-Swappable 3.5" Drive Bays
  • JBOD (Hard drives are accessed individually)
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Sans Digital TowerRAID TR4M+BNC - Four-Bay eSATA Port Multiplier JBOD Tower

(No eSATA Card Bundled)


Sans Digital

The TowerRAID TR4M+BNC is a compact JBOD tower utilizing the latest SATA II port multiplier technology, where one single eSATA cable connects to four SATA hard drives. Four hard drives can be implemented individually, providing instant storage expansion with ease.

Designed with easy installation in mind, the trayless TR4M+BNC allows instant setup by simply inserting the hard drives after opening the protective ventilating cover. Port Multiplier technology is widely available in current eSATA port, including home server, laptop and personal computer, and an optional port multiplier supported eSATA controller can be purchased separately for added performance and functionality, such as RAID application. TR4M+BNC supported in Windows, Linux and Mac, including storage expansion, home server applications as well as personal data backup.

Sans Digital

  • Supports PC, Linux and MAC OS, including Windows 7 and Snow Leopard
  • Access to four hard drives using only one cable
  • Drive interface: four 3.5" SATA I / SATA II
  • Supports port multiplier enabled RAID adapter for additional RAID application
  • Host interface: eSATA with Port Multiplier*

*SATA/eSATA port require support port multiplier in order for your computer to recognize multiple hard drive. Port multiplier supported eSATA port is required.

Sans Digital

What's in the Box

Sans Digital

Learn more about the SANS DIGITAL TR4M+BNC



General Spec

SATA 1.5 & 3Gb/s
External I/O
eSATA (via Port Multiplier)
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

Mechanical Spec

Power Supply
150W (115V - 230V Switchable)

General Spec

5.3" x 7.1" x 10.0"
5.9 lbs.
Form Factor: Compact Tower

Maximum Capacity: 16TB

Host Interface & Transfer Rate:
eSATA (via Port Multiplier)
Note: *Port Multiplier supported eSATA port required.
*Please see Sans Digital eSATA port multiplier controller card selections.

Cooling Fan: 3.15" Ball Bearing Fan

Status Indicators: Power LED and 4 * Access LEDs

Accesses four hard drives using only one cable

Support port multiplier enabled RAID adapter for additional RAID application

* SATA/eSATA port require support port multiplier in order for your computer to recognize multiple hard drive. Port multiplier supported eSATA port is required.
** No eSATA card bundled


Package Contents
Power Cord
eSATA Cable
Screws (1 set)
Quick Installation Manual

Quick Info


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

Customer Reviews of the SANS DIGITAL TR4M+BNC

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  • factfinder
  • 12/22/2014 1:36:59 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsStorage for Storage

Pros: Simple set up, recognized by computer through eSATAII connection. Reduced space four external HDD to space equivalent of two. which were cluttering my desk space. Replaced four USB connectors with one esata connector.

Cons: Will cost additional money to purchase and esata card with port multiplier capability. Only one of 4 HDD are recognized on the standard (non-multiplier) port.

Did you find this review helpful? Yes No

  • Barnacules
  • 10/27/2014 8:10:02 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsWatch out for power outages

Pros: Allows you to easily connect 4 sata drives to your system via eSATA

Cons: Power supply is horrible, it blew out on one of my units after a few months of use. Won't power on at all and non serviceable fuse so it's a throw away at this point.

Manufacturer Response:

Thank you for your purchase of our product.

I am sorry to hear about the failed PSU, it should not have failed so soon, it’s possible there was a defect in this particular PSU.

To discuss your case further, please call 1-800-980-1988 to get in touch with one of our Technical Engineers, or email us at

Did you find this review helpful? Yes No

  • SimonYel
  • 10/13/2014 5:07:44 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsVery poor

Pros: Rather cheap solution if compared to NAS devices and other JBODs.

Cons: Have had two of these already and both died right at two year mark. They use terrible power supplied and sell replacements for the cost of a brand new unit. I've lost faith in this brand, definitely not getting a third one.

Other Thoughts: You can usually tell the quality of device by how long the warranty is. If company knows or believes in the quality of their product they will give you better then 1-year warranty.

Manufacturer Response:

Thank you for purchasing our Sans Digital product.

I apologize for the inconvenience this issue has caused, given how long the enclosures have been active, it’s likely overheating may have caused the PSU’s to fail. With any enclosure, it is recommended to routinely rid the enclosure and PSU of dust and store the enclosure in a place with good air flow.

To discuss your case further, please call 1-800-980-1988 to get in touch with one of our Technical Engineers, or email us at

Did you find this review helpful? Yes No

  • Larry
  • 9/16/2014 3:30:47 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsWorking so far, waiting for rebate

Pros: Reasonably easy to setup. Works fine with the eSata port multiplier on my PC.

Cons: I did own an older Sans Digital storage enclosure that died with a bad power supply. Crossing my fingers on this one.

Other Thoughts: 3 months and counting for the rebate.

Did you find this review helpful? Yes No

  • N/A
  • 9/6/2014 3:20:15 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsNo Power to 3/4 of the Drives

Pros: The drive is constructed well, it's sturdy. Drives go in and out easily. It worked well when it was working.

Cons: It stopped powering all four slots. Only the first/bottom slot is providing power to a drive.

Did you find this review helpful? Yes No

  • PatrynXX
  • 8/29/2014 9:17:13 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsSupport replies seriously lacking.

Pros: Ridiculously high grade metal. ie like the old school 2001 Alienware case type. Very well built. Maybe too Well. So it's a con as well. It does find all 4 drives but again a Con. Very fast when it works.

Cons: Face Palm on myself. Port multiplier. Okay Newegg has one for eSata to USB 3.0 but no rating so I bought one else where. Not sure if it's that stick though (5/5 star) or Sans Digital. Neither of them replies to emails. But it has a bad tendency to go into standby and in Windows 7 that causes some hell. Mac has an option to keep the discs spinning but WIndows doesn't :( Also yeah it is plug and play but can cause issues eventually if you switch a disk. Also has issues if you stick the computer in hibernate. The drives don't come back so I have to reboot. And my Dell XPS L702X BIOS doesn't seem to like whatever system the 3.0 converter uses so I have to unplug it while the Dell boot screen is on then quickly insert it after that screen goes out. NewEggFlash didn't make a mention of needing a port multiplier. not sure if the 3.0 version needs one. The con on being well built? uh do you have nails? are they short? It's not coming off then. If they are a bit longer you might break them off. This thing is so tight basically required a professional flat head screwdriver to slowly remove the cover. (so you can put the thumb screws on. Other oddities. The power isn't true Sata. It's powered by Molex power. (4 wires each) Sata is 5 wires. (orange wire is missing) Now not looking inside my old white Vantec (taking it apart) I can't say much about this either but there are many molex to sata converters that convert with 4 wires. My tech knowledge into this design I have no idea what the orange wire does. (blush) And yes seriously what is it with BLUE. I don't mind it. Red, blue and green are good on the eyes in the dark but, ... to look professional one should put in a normal fan. Made of normal plastic. The clear plastic has a bad tendency to crack. Another Con. 4 drives?? uh well if you want to get the drives out don't the other it doesn't seem to like 4 drives in. And won't let me run much if my main drive is in the Disk 1 slot. Now if you don't want to run this as a JBOD but as a good single disk housing thru esata. putting it in Disk 1 seems okay but my Disk errors went from 1 to 9 in that amount of time. and S.M.A.R.T. hates this box. Both GsmartControl (it crashes) and HDD Guardian (it doesn't see the device thus the drives) Hates it. Only Speedfan seems to find most of them. Also a 300gb WD (Blue label) won't work in this thing.

Other Thoughts: Standby is my main issue with this. When it shuts the discs off it takes forever for windows to find the drives again. I got my converter thru datoptic, it's white. Seems well rated but some have reported issues in Windows 7. Without this $32 item I would have returned this unit. With it. I think I can live with the issues but still Molex power? It's powered by 2 Molex connectors so maybe running 4 drives on 2 not a good thing..Depending on if they are high powered drives or Green drives. Also gotta fix that BIOS issue. Might ask Dell about it but the warranty Died on Aug 3rd and I didn't renew because they can't seem to communicate. Always make sure you keep one of the techs emails . I see some of this as a BIOS issue. if Sans Digital has a forum board I'd love to know about it.

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

  • PatrynXX
  • 8/22/2014 12:26:26 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggsYeah get that Port Multiplier.

Pros: Figured out after seeing the Neweggflash letter that this needs a port multiplier figured this out a day later. :( And thats not possible on a Laptop/notebook. However might have found a way around this. There is a port multiplier adapter for changing the eSata to a USB 3.0. Not cheap. found one for $33 though. And NewEgg didn't have one that was rated so had to go elsewhere. Kinda hoping a mini extension cord will ease the torque one the port though. (weight). But only way this would work. Hope it ships fast though or I'll have to return this.

Cons: Not very well thought out on plug in play. These drives aren't coming out without some muscle and the case must be taken off. If you can take the case/cover off without breaking an already short nail be my guest. Otherwise I had to jimmy it off with a flat screwdriver. Not all that thrilled about the thought of putting it back on. Rather just cover it with non conductive plastic. And who thought up putting in a BRIGHT blue LED fan in the back. It's not that powerful.

Other Thoughts: You need that Port Multiplier !! NewEggFlash didn't exactly put it up in big print. Sneaky. :( But it's hard for me to say no to a challenge. I have 3.0 ports lets see if that works. Does run a we bit warm on the hard drives. so not entirely sure what the fan is for. If this is an 80mm fan probably have ones that fit.. The drives slide in rather easy but they are a major scare to remove. Do like the LED lights for activity. Seem more accurate than the White Vantec I have which still puts off less blue light than this thing.

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

  • Zach
  • 7/21/2014 8:19:04 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsSketchy Rebate Process

Pros: Mostly reviewing the rebate, but I will list some pros.

Hardware does what it says, plug and play with my system (JMicron JMB36X Controller on Abit IP35 Pro). Bought the item on super-special with a sizable rebate offer. LED lights indicate per drive power and activity. Easy to slide drives in, decent airflow.

Cons: After a few months, device began to lock-up and soft restart during disk activity making it very hard to manage outside of a hard power down on the unit.

Power plug is loose / flimsy. Feels like if I push the power cable in too hard it will break inside of the unit.

I gave this 2 eggs because I did, actually, get my rebate. The folks were very nice once I called to ask about it. The only problem was, I called 6 months after I submitted my rebate form. They "found" my application within seconds while I was on the phone, and it arrived within 2 weeks after that request. So in my experience, in order to get your rebate, you may very well have to call them. And since they're so nice, you may as well call them and ask them to fill the rebate out for you, then request they send you the check. Saves you an extra step!

Seriously Sans Digital, I'm not the first to complain about your rebates. Please give people their money. No need to respond to me, I likely won't be buying from you, at least for the next six months, and then you can call me and ask nicely. :-o

Manufacturer Response:

Thank you for choosing Sans Digital products.

We are sorry to hear about the issue you are having with the unit locking up please help to contact us for more detail support, you can contact us at for email support or 1-800-980-1988 for phone support.

We aim to provide the most reliable and highest quality storage product to our customers.

Did you find this review helpful? Yes No

  • EH
  • 7/10/2014 3:02:50 PM
  • Tech Level: High
  • Ownership: more than 1 year

2 out of 5 eggsFailed after 2 years

Pros: Easy access to 4 SATA drives. Fast with eSATA interface. Worked as multiport JBOD with 2 TB WD Green drives.

Cons: Bought as bundle with an inexpensive esata card. Started to have drive issues and non-readable drive problems after about 2 years of VERY light use (maybe 500 GB total written across 4 drives). After trying this with 3 different esata cards (2 motherboard and one PCI-e card), I can clearly say the enclosure is broken. Powers up the disks but Windows 7 will not recognize the drives (3 different machines). Fortunately, I was able to put the drives into another enclosure since it is a JBOD device and my data was safe.

Other Thoughts: Since this was a destination for scheduled backup jobs on my workstation, I was very worried when Windows said the drives were corrupted. My data is safe and I am now steering clear of SansDigital as a backup device.

Did you find this review helpful? Yes No

  • DocacE911
  • 6/9/2014 8:23:10 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsPSU failed after 2 years

Pros: When it worked with my WHS box (HP EX495) it worked flawlessly until last night. Held 4 2TB drives.

Cons: Last ngiht PSU clearly failed. Won't even turn on or give power lights.

Other Thoughts: I ordered a replacement since all my media is on it. Not worth the risk of WHS seeing a new enclosure differently (yes I know technically is uses the serial fo the drive but I have had issues with "disk 2 being 1 etc" when plugging in USB drives.

Did you find this review helpful? Yes No

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