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USB 3.0 to Esata Adapter Support Port Multiplier (Patent Pending) - U3esata

4.3 out of 5 stars 126 customer reviews
| 27 answered questions
Price: $29.95 + $4.99 shipping
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  • INCOMPATIBLE with eSATA device and built-in USB3.0 port: like Mediasonic box
  • Support Hot-Swap & Plug-n-Play, Support eSATA drive with or without port-multiplier up to 5 drives in ANY OS support USB2.0 and USB3.0
  • Supports Software RAID feature in Mac OS X, and Linux. Support SATA Port-Multiplier: JBod or RAID mode
  • Non-compatible with JM575 Port Mutitlpier chipset
  • Supports SATA II, III Asynchronous Signal Recovery (Hot Plug) feature - No power, no driver required
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  • USB 3.0 to Esata Adapter Support Port Multiplier (Patent Pending) - U3esata
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  • StarTech 6-Feet Shielded External eSATA Cable M/M (ESATA6)
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This item USB 3.0 to Esata Adapter Support Port Multiplier (Patent Pending) - U3esata
Customer Rating 4 out of 5 stars (126) 4 out of 5 stars (6) 4 out of 5 stars (62) 4 out of 5 stars (359)
Price $29.95 $79.95 $16.18 $29.99
Shipping $4.99 FREE Shipping FREE Shipping FREE Shipping
Sold By DATOptic-AMZ Oodelay Silhouette Goods Inateck Online
Item Dimensions Information not provided 3.3 x 2.2 x 0.9 in 5.25 x 6.5 x 1.5 in 5.2 x 5.8 x 1 in
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Product Information

Technical Details

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Other Technical Details
Brand Name DATOptic Inc
Item model number U3eSATA
Item Weight 0.3 ounces
Product Dimensions 2 x 0.8 x 0.6 inches
Color White

Additional Information

ASIN B005DCCMII
Customer Reviews
4.3 out of 5 stars 126 customer reviews

4.3 out of 5 stars
Best Sellers Rank #165 in Computers & Accessories > Computer Components > I/O Port Cards > USB Port Cards
Shipping Weight 0.3 ounces (View shipping rates and policies)
Date First Available July 19, 2011

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsThis Product Works
By Bdog on July 27, 2012
Verified Purchase
Built a new WHS 2011 box with an Asus P8H67-i mother board with single PCI-e slot, I was using an HP Microserver, but I needed more horsepower, with only one PCI-e slot reserved for my Ceton tuner, I was having to back up my server via USB 2.0, I have a this USB 2.0/Esata exclosure, http://www.amazon.com/ProBox-Drive-Enclosure-3-5-inch-drive/dp/B002UUPWP6/ref=pd_cp_e_3, instead of dropping $150 on a new external enclosure with USB 3.0, I gave this a try, it was advertised as the only USB 3.0 to Esata adapter with Port multiplication, I can confirm that it actually works, file transfers range from 60MB/s to 110MB/s depending on the file size, and using the WHS 2011 Add in, home server smart 2012, I'm even getting smart data from the drives in the enclosure. Fantastic. The card shipped from California to the east coast in 4 business days, so far so good. I'll report back if I have any issues.

Update May 6 2013
Product is still working well, this weekend, I added a USB 3.0 Hub, ne of the amazon special Anker Uspeed USB 3.0 4-Port Hub, and product works well through the hub using the hubs ac adapter, I did not try it with out the Hub's AC adapter. I use this device only to connect my Media Sonic 4 bay enclosure, to backup up my 5 plus TB's of data on my WHS 2011, which usually takes 24-36 hours, as my back up program does a crc32 check of each file on the on my server and in the backupset. Again great product.
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5.0 out of 5 starsWorks well with port multiplier.
By Shawn Hicks on January 25, 2014
Verified Purchase
I was having problems with the integrated ICH9 eSATA interface on my QNAP TS-659 not initializing correctly. Sometimes it wouldn't see all the drives. After switching to this USB 3.0 eSATA adapter, the drives are available instantly without any enumeration errors. I also don't get the "Plugged drive failed to work." messages in the qnap system log. The only negative effect is the system load is a little higher due to USB protocol overhead, but worth it for reliability. I was also able to inspect the linux raid0 ext4 volume with DiskInternals Linux Reader by plugging into a Windows system.

Edit: After further testing, the problem was that NCQ is automatically enabled when connected by ahci. By "echo 1 > /sys/block/<disk>/device/queue_depth" NCQ is disabled on each drive in the port multiplier. This is the default using the USB 3.0 eSATA adapter and can not be adjusted. With this configuration I was able to achieve 150MB/s to 160MB/s on the ICH9 interface and only 85 to 90MB/s on the USB 3.0 to eSATA adapter.

My previous observations regarding FIS were inaccurate, I doubt this adapter supports FIS:
The behavior of this adapter seems to indicate it supports FIS, as all the drives light up together compared to a direct connection ICH9 sata which doesn't support FIS. I spent a bit of time trying to tune the "chunk" size of the raid0 to get better performance from the ICH9, with the USB adapter tuning isn't required. A also noticed that the 4k physical block size is correctly reported via this adapter where the ahci driver only sees 512b on the ICH9 and 88SE9125 controllers.

This product contains a jmicron JMS539
Used with SiI3726 port multiplier Sans Digital TowerRAID TR4M
Seagate ST4000DX000 and ST4000DM000 drives.
uPD720200 USB 3.Read more ›
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5.0 out of 5 starsHelped me fix my problem quickley
By wshell on May 3, 2012
Verified Purchase
I have a mac, and had trouble attaching my Rosewill RSV-s8 to it. There are no clear cut ways to attach it to an imac. After an hour or so with Rosewill support they guy told me "i dont know man-you are going to need a port multiplier I guess". So I found these on here. I ordered them. 1st off, Mason, who I spoke with was beyond helpful. He had Sam, the IT guy call me as well and help trouble shoot what I was doing. There was a firmware issue that I read about in other posts and they explained to me what the deal was, and made sure I got what I needed. I literally hooked these to the esata drives and right into my computer (dont try to hook it to a network usb hub-Sam told me a usb hub cant read a port multiplier), and BOOM, had all I needed. Id definitely recommend this product to anyone who has a Mac and wants to expand their storage capacity with a very inexpensive device.
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1.0 out of 5 starsBarely supported, not as advertised for Mac users.
By Steven L. Major on January 4, 2015
Verified Purchase
I had purchased a 4-bay drive enclosure with USB3 and, like many others purchasing similar units, they all seem to have sporadic USB3 disconnects regardless of OS (I use a Mac) - I personally think the USB3 standard should have been taken for a test drive around the track a few more times, but that's not to debate here. This item seemed like the perfect fit - convert the troublesome USB3 to the eSATA connection on the box.

Despite the claims on the website, the one I purchased did not come with the latest firmware, causing one drive out of 4 the show up. I flashed it with the latest that resolved that issue. However, included with the unit is a note that if you use a Mac, you need to download someone else's free software to keep the external drives from going to sleep. Software which won't work with the latest Mac OS. You can hardly claim OS X compatibility if you have to use what is essentially a hack to get your product to work. Include a driver/utility of your own that you support and maintain.

Speaking of support, emails to the company, before I returned this item, went unanswered.
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Most Recent Customer Reviews

5.0 out of 5 starsFive Stars

very good

Published 1 month ago by Amazon Customer
4.0 out of 5 starsOnly used on usb2 and speed is what I expected not great but perfect...

Exactly what I needed to connect a couple of older 4bay esata drive enclosures to a notebook on the road. Read more

Published 2 months ago by DMurphree
3.0 out of 5 starsWatch what chipset you have

Usb device did not work with my chipset.

Published 4 months ago by richard e. yackaboskie
5.0 out of 5 starsWorks great on Linux

I had to buy this direct through the company website since Amazon and (almost) nobody else carried it. It was worth it. Works great on Linux. Read more

Published 8 months ago by Jay
5.0 out of 5 starsUse those legacy drives

This has been a godsend. I have a few very large raids that are esata and this allowed me to continue using them with my current setup.

Published 8 months ago by Peter
5.0 out of 5 starsFive Stars

I haven't used it much but I can verify it does work with my port multiplier.

Published 9 months ago by Andrew
5.0 out of 5 starsIt works!

It seems to be the only USB 3.0 to ESATA with port multiplier that I can find. I am happy to report that the product works as advertised.

Published 10 months ago by H
5.0 out of 5 starsGood

Works as advertised
. Good price

Published 11 months ago by Ric
4.0 out of 5 starsUsually works great but I've had a couple times where this caused ...

Usually works great but I've had a couple times where this caused a fatal error and BSOD. Not sure if it was a driver issue or what and it doesn't happen all the time so I haven't... Read more

Published 12 months ago by DK
5.0 out of 5 starsWorks with 2013 Mac Pro

I udgraded to a Mac Pro 2013 and was a bit concerned about using this with my Mercury Elite AL-Pro Qx2 drive bay, but it works great. Read more

Published 12 months ago by Unison

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