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Item#: N82E16815287028

Vantec 4 Channel 6-Port SATA 6 Gb/s PCIe RAID Host Card Model UGT-ST644R with HyperDuo

  • PCI Express to SATA Card
  • 4 x SATA III
  • 6.0 Gbps Data Transfer Rate
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The Vantec UGT-ST644R add-on card is a high-performing, low-cost solution that adds multiple SATA connectivity via PCIe 2x interface to your computer. Four channels can be assigned freely within six SATA ports (four internal ports and two external ports) to meet your personal needs, while the attached drives can be configured into multiple RAID modes for optimized performance and data protection. The support for SATA III and PCI Express 2.0 allows you to take full advantage of today's storage technology without compromise. Full-height and low-profile brackets are both included for easy integration into systems of various form factors.

  • newegg HyperDuo Technology HyperDuo, created by Marvell Semiconductor, Inc., optimizes the performance of storage technology. It involves the combination of the SSD as cache storage for the HDD drive to give unparalleled access speed. This tiering of SSD and HDD can give you 80% SSD performance at about the a third of the cost. Using safe mode, you mirror frequently accessed files (hot files) in SSD speed; in capacity mode, you combine SSD and HDD with frequently accessed files (hot files) in the SSD. You can easily setup the configuration in the card BIOS to optimize your system.
  • newegg Four SATA III Channels A total of four channel gives you the capability of add up to four HDD/SSD drives for performance boost or storage expansion. SATA III 6Gbps on every channel offers the maximum performance for all your drives.
  • newegg Six Configurable Ports Two dedicated channels are routed to two internal ports and cannot be disabled. The other two channels can be assigned to two internal ports, two external ports, or one internal port and one external port, all at your will. The configuration is implemented via the onboard jumper. The port multiplier function is great for multi-bay enclosures to minimize multiple cables and maximize storage. Support both FIS and command-based switching
  • newegg Multiple RAID Modes RAID 0, 1, 10, and HyperDuo function for redundancy Keep your data safe and, at the same time, enjoy faster disk access.
  • newegg PCI Express 2.0 This stable technology with great compatibility provides faster and wider bandwidth for data flow between the drives and your system.
  • newegg Easy Integration A low-profile bracket is included to simplify your installation into standard desktop-, slimline-, or low-profile systems.

Learn more about the Vantec UGT-ST644R




PCI Express to SATA Card
External Ports
2 x SATA
Internal Ports
Data Transfer Rate
6.0 Gbps
Operating Systems Supported
Windows XP/Vista/7/8 and Server 2008 R2


Compliant with PCI-Express Specification v2.0 and backward compatible with PCI-Express 1.x
Compliant with Serial ATA Specification 3.0
PCI Express x2 interface, and compatible with PCI Express x4, x8 and x16 slots
Supports communication speeds of 6.0Gbps, 3.0Gbps, and 1.5Gbps
Hot plug and Hot Swap
Support Native Command Queue (NCQ)
Supports Port Multiplier FIS based switching or command based switching
Compatible with SATA III/II/I Hard Drives
Support RAID function: RAID 0, RAID 1, RAID 10 and HyperDuo


Package Contents
1 x 4 Channel 6-Port SATA 6Gb/s PCIe RAID Host Card
1 x Driver CD
1 x User Manual
1 x Low Profile Bracket
2 x SATA Cables

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the Vantec UGT-ST644R

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  • Michael N.
  • 3/17/2015 12:28:02 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsWorks as expected

Pros: Benchmarks in Raid 0 and 1 exactly how one would expect. The "boost" feature with an SSD also works excellent.

Cons: bios boot screen is slower than some units i've used.

Other Thoughts: Would recommend price/performance.

Did you find this review helpful? Yes No

  • Joseph N.
  • 2/11/2015 3:26:14 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsInexpensive hardware RAID!

Pros: 1. Inexpensive
2. Contains a ARM processor on board for true hardware RAID.
3. Plug and Play in my WHS 2011 server box.
4. Has Hyperduo for SSD+HDD integration.

Cons: None at this time.

Other Thoughts: I'm using this controller card with a AsRock B85M-ITX motherboard for a home server. I have 8x SATA 3 ports plus 1x eSATA port available for drives. I also want to point out that this card is installed and working correctly in a PCIe v3.0 x16 slot usually meant for graphics cards. (although this may be more motherboard related).

I'm currently not using the RAID or Hyperduo functions, but have the option to try them in the future.

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

  • Ezra K.
  • 1/6/2015 8:08:14 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Excellent fast ports.

Cons: The internal ports did not work on my 5 year old motherboard. I'm not sure about the external ports because I did not test them.

Other Thoughts: Make sure your motherboard is compatible with this card.

Did you find this review helpful? Yes No

  • Anonymous
  • 12/27/2014 7:13:15 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsTurns off motherboard sata ports

Pros: Easy to install

Cons: It disabled sata ports on my motherboard. Wanted to add more ports, ended up loosing my HDD ports.

Other Thoughts: Nice card if it will work with your motherboard, seems like it conflicts with my ports on Asus z97 Deluxe board..

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

  • En-Kuang L.
  • 5/18/2014 9:06:48 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsdoes not work in linux

Pros: I guess it show up in windows 7 and linux.

Cons: only four port can be used at a time, so do not expect to use all six ports at a time.

Does not work under linux. It will work for a while but any sort of large io transfer will get you IO Error and the entire sata card will go down. Only a hard shutdown and restart will fix this, not even a reset will fix it.

Other Thoughts: I guess this will work fine if you just want windows support.

6 out of 6 people found this review helpful. Did you? Yes No

  • Stephen T.
  • 4/4/2014 8:59:44 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSolid Card, Great Buy

Pros: This card has a solid physical design, and the inclusion of low-profile mounting brackets means you can use this is thin client, and 2U+ rack cases.

I am using the card to host an external backup drive, and an internal backup drive. Solid performance, no issues at all.

For those having issues with the drivers, make sure you get the Marvell 92xx drivers from Marvell's website. In Device Manager the the files are listed as mv91xx.sys, mvxxmm.sys, and mv91xxm.dll.

In regards to device compatibility, I have had no issues testing SATA I, II and III hard drives. As well, no issues with either DVD-RW or BR-RW drives, single and dual layer. Booting from all devices works fine, but this is actually dependent upon the motherboard BIOS.

Cons: There are a couple of items that buyers need to be made aware of:
- Firstly, this card is requires a PCI-e x4 or larger slot. It will not fit into x2 as the description indicates.
- Secondly, this card has four SATA channels, that means only four of the six ports are usable at once.

Other Thoughts: This is a great card, with solid compatibility and performance. I have never bought a bad Vantec product, and they are one of the few brand names I inherently trust.

6 out of 7 people found this review helpful. Did you? Yes No

  • GARY B.
  • 4/3/2014 2:26:51 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat Card for my AMD and older Intels

Pros: First, I must say, I didn't buy these for the RAID function. I bought them for the SATA III internal ports.

I installed them on 2 Intel X58 motherboards and an AMD setup.

The Intel X58 builds are G1-Assassin and X58A-UD5. Both of these boards had 6 SATA II ports and the Marvell 9182 and Marvell 9128 chipsets (respectively) for SATA III which causes SSD's to show up as SCSI drives and not ATA drives. I use the Samsung 840 EVO SSD's and when drives show as SCSI and not ATA in device manager, then the Samsung Magician Software doesn't see the SSD's as they are and you can't use the RAPID Mode or much else since Magician thinks it's a generic drive.

So I installed the Vantec SATA III Host Cards in each and let Windows 7 Ultimate install the MSAHCI or generic SATA drivers and left it at that. I didn't install the Marvell 9230 drivers. (Actually I did as a test on one, and it did in fact switch the drive to a SCSI and Magician stopped working, so I switched it back).

So for the 2 Intel X58 boards I now have fully working SATA III ports and the Samsung EVO's are getting the full performance boost from the Vantec SATA III Host Card which is connected to the PCI-e x16_2 slot since I don't run SLi, I had that slot available.

For the AMD computer, I read so many reviews and problems and even Samsung themselves said that AMD SATA controllers aren't supported for RAPID Mode and other problems it seemed people were having with Samsung SSD's and AMD chipsets getting along.

I went ahead and bought one of the Vantec SATA III Host Cards with the intent to install it on the GA-990FXA-UD3 and let Windows install the generic SATA drivers and leave it that way so I could use a Samsung 840 EVO on that computer as well.

I installed the Vantec first with no drives attached and booted into windows letting the generic drivers install. I re-booted making sure AMD chipset didn't take over the card upon re-boot.

Shutdown, attached the Samsung EVO SSD and booted into Windows. The Samsung showed up in Device Manager as an ATA drive and not SCSI which would mean Marvell took over the port, and it wasn't showing up as a SATA drive which would mean the AMD chipset took over. (at least on my computer all drives attached to the SATA III ports on the AMD chipset driver show up as SATA drives, not sure if that's for all AMD chipsets)

After I verified that the Windows Generic Drivers or MSAHCI drivers were running on the Vantec ports, I then did the Clone of my original (240GB) SSD to the larger 750GB Samsung EVO.

Removed the 240GB SSD and booted from the Samsung on the Vantec SATA III Host Card, installed Samsung Magician 4.3 and did the Firmware update. Re-booted and initiated the RAPID Mode and re-booted again.

Everything is working great! No issues between the Samsung EVO and AMD based computer.

Cons: none

Other Thoughts: With the RAPID Mode working and using the Benchmark program that comes with the Magician Software, as of the latest test, I'm getting Seq. Write 908 and Seq. Read 952 which was high 400's for both before RAPID, so I know through the Vantec Host Card it is working at SATA III speeds.

I know most people buy these cards for the RAID functionality, but I must say, for my purposes they work great! Being able to give SATA III ports to an older board for my Intel builds and being able to install an SSD with known conflicts with AMD chipsets, the Vantec SATA III Host Cards are Great!

I did set one of my Intel computers up using the HYPERDUO and that is an awesome feature as well. I used a 120GB SSD and a 1TB HDD which is my backup drive and it truly does work as they say.

A great way to still utilize those old HDD's by adding a small SSD in a RAID 0 or RAID 1 setup.

For my use, great Host Card! It's made it possible for my older SATA II Intel setups to have SATA III capabilities and for my AMD setup to run an SSD without the known conflicts!

Since I haven't really tried the RAID functions except for the one HYPERDUO (which is great), I really can't comment on over-all performance.

But if you need a workaround for either having SATA II only, or an AMD based Computer that's having conflicts with SSD's, for $45 dollars or so, this is a pretty worthwhile investment!!

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

  • Daniel B.
  • 3/29/2014 8:28:27 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsBuy New Sata Cables

Pros: Cheaper than other similar cards running the same marvel chip

Cons: the included cables were bad on my unit, purchased new cables, and the card works just fine.

Other Thoughts: update to my earlier review on 2/23. I purchased a second card locally to test, had the same exact problems which is really odd, I could duplicate the problem with both cards, didn't use the included cables from the second card, used cables from original card, and a couple others I had laying around, returned the second card, and bought some sata 3 cables with the clips. Reinstalled the original card from new egg, with the new cables, and viola, it works. I have two weekends of headaches all due to some cr@ppy SATA cables that shipped with the card.

Decent card but be warned the cables may be faulty.

Upgrade rating to 4,

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

  • Daniel B.
  • 2/23/2014 3:35:16 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsfaulty card

Pros: cheap, 4 Sata ports, flexible, half height adapter, or add 2 esata see below, as the pros don't help with a card that doe not function as intended.

Cons: initially connect two drive's to ports 3 and 4 as these are not configurable, internal connections only. All was well, Added a 3rd drive to port one, and went down hill from there. Constantly drops the drive on port 1/port 2 and sometimes affects the drives on ports 3 and 4. changed cables, tried other drives, nothing worked, went back to original config with drives on ports 3 and 4, again, it's rock solid, so I plugged these drives into ports 1 and 2, and as soon as the controller is stressed, bam, the drives go missing. Clearly and issue with ports 1 and 2, received defective product, will have to go through warranty claim.

Other Thoughts: below user, see if you have the same results, pull the drives from ports 1 and 2, and see how it goes with ports 3 and 4, doesn't solve you issues, but it confirms there's a defect, I purchased my card jan 23. we could have bought from the same bad batch.

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

  • Steven G.
  • 2/20/2014 10:46:39 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsOk until pushed

Pros: Cheap

Cons: Ok until I tried to push large amounts of data through it then drives started to go offline and it all went downhill.

Other Thoughts: I am running a linux box with 8 HD's and one ssd.
I needed the extra sata controlers.
It read my drives fine and I could make small copy operations to it.
But when I tried to reorganize some data I kept having drives drop offline and the files I copied were not readable. I figured out the only drives that were messing up were the ones connected to this controler
My case has very low temps so it has never been hot.

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

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Item#: N82E16815287028
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