|Number of USB 2.0 Ports||2|
|Number of USB 3.0 Ports||3|
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StarTech.com 2 Port PCI Express SuperSpeed USB 3.0 Card Adapter with UASP - SATA PEXUSB3S24
- Low Return Rate: 15% fewer returns than similar products
- Highly Rated: More than 80% 4 star and 5 star reviews
- Popular Item: Popular with customers shopping for "startech usb 3.0"
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- Enter your model number to make sure this fits.
- Form Factor: plug-in card
- Interface (bus) Type: PCI Express x1
- Ports: USB 3.0 x 2
- Add 2 SuperSpeed USB 3.0 ports with SATA power to your PCI Express-enabled PC
- Compatible with HP Pro 6300 / Lenovo ThinkCentre M72e
- 2 Port PCI Express USB 3.0 Card Adapter w/ UASP / 2Port USB 3.0 Controller Card
- USB 3 PCIe Card / PCIe USB 3.0 Card
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From the manufacturer
Power high-powered USB devices as necessary
The PEXUSB3S24 2-Port PCI Express USB 3.0 Card lets you add two USB 3.0 ports to your PCI Express-enabled computer system, with an optional SATA power connector to connect to your system power supply and deliver up to 900mA of power per port to USB 3.0 bus-powered devices (500mA for USB 2.0).
Add 2 SuperSpeed USB 3.0 ports with SATA power to your PCI Express-enabled PC
- Upgrade an older PCIe-based system from USB 2.0 to USB 3.0 connectivity.
- Expand the USB capabilities of your system with two additional external ports.
- Connect additional external hard drives, CD/DVD drives, MP3 players, printers, scanners, webcams, game controllers, digital cameras, etc. to a computer system.
Look for StarTech Branded Packaging to ensure you are getting a genuine StarTech product.
What' in the Box
1 - PCI Express USB 3.0 Card.
1 - Low Profile Bracket.
1 - Driver CD.
1 - Instruction Manual.
- Provides two external USB 3.0 ports with UASP support
- Supports data rates up to 5 Gbps
- Compliant with PCI Express 2.0 specifications
- Optional SATA power connector provides up to 900mA per USB port
- Supports USB Battery Charging Specification 1.2
- Fully compliant with USB 3.0 rev 1.0 and Intel xHCI rev 1.0 specifications
- Backward compatible with USB 2.0 and USB 1.0/1.1 devices
- Includes a Low-Profile/half-height installation bracket
Compare with similar items
Add 2 SuperSpeed USB 3.0 ports with SATA power to your PCI express-enabled PC. The PEXUSB3S24 2-Port PCI Express USB 3.0 card lets you add two USB 3.0 ports to your PCI express-enabled computer system, with an optional SATA power connector to connect to your system power supply and deliver up to 900mA of power per port to USB 3.0 bus-powered devices (500mA for USB 2.0). enhanced with UASP support (USB attached SCSI Protocol), this USB 3.0 controller performs up to 70% faster than conventional USB 3.0 when paired with a UASP supported enclosure (Note: UASP is not supported by all operating systems). using a more efficient Protocol than the traditional USB bot (bulk-only transport), UASP technology optimizes transfers by allowing multiple commands to be processed simultaneously, significantly increasing transfer speeds for less wait time on data transfers. The PCIe USB 3.0 adapter is compliant with USB 3.0 standards for data transfer speeds up to 5 Gbps, while still offering backward compatibility with existing USB 2.0 / 1.1 devices. For added versatility, the controller card is equipped with a standard profile bracket and includes a low-profile/half-height bracket for installation in small form-factor computers. Uasp is supported in Windows 8, 8.1, server 2012 and Linux kernel 2.6.37 or LATER. In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB 3.0 at peak performance. At the same peak in testing, UASP also showed up to an 80% reduction in required processor resources. Test results were obtained using an Intel Ivy Bridge system, Startech.Com add-on USB 3.0 cards, a UASP-enabled Startech.Com enclosure, and a SATA III solid state drive.
Top customer reviews
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I have also been able to use both of the USB 3.0 ports at the same time and have had no issues with the port self-powering the 2.5" external drives. Overall I am very satisfied with this USB 3.0 card and management will be super happy that a full restore of the server will only take 4 hours and not 21.
Pros: Easy physical install (low profile plate included).
Cons: While driver disc was included, I HIGHLY suggest you skip the install disc process and let Windows go online and find one.
After installing with the CD, my virus checker reported a Trojan which had to be quarantined. This could have been co-incidental, but I think not.
I am not crazy about any company who may use their install disc to garner any information whatsoever from my computer, no matter how innocent the purpose.
The card locks up the boot process, not even getting to the BIOS boot phase. After three trys, it finally does complete booting.
This happened twice where multiple re-boots were necessary. This may be a bad card, but it's not worth my time to try another which I normally do (as most here do not).
USB3 add-ons seem to have a problem as I have had problem (not this) with another card. This is running Win7 x64. It appears to be a conflict with existing on-board USB3 ports.
Product ID: PEXUSB3S24
Drivers used - off website - [Renesas_uPD720201_2] USB 3.0 Controller Card.zip (year -2012)
OS - win7 64 bit
I've been doing backups to external WD 2TB USB 3.0 drives. I was only getting like 29Mb/sec transfer speeds.
I put this card in, downloaded the drivers and it worked right away.
I was getting around 29 Mb/sec real work transfer from the USB2.0 ports. This cards 3.0 ports gave me 100+ Mb/sec or as fast as the WD could handle. In theory its should get like 400 ish Mb/sec. Figure 3-5x faster real world vs old USB 2.0.
I bought this one because other PCIE USB 3 cards were flacky, this one works out of the gate.
It was fine back in 2011 but had become a slug with a full drive and a memory hog like Windows 10.
On my unit the PCI slots have to be pried out with pliers since the slots are part of the overall stamping, This was probably done to save money in manufacture but it's a real pain when you need to open a slot.
It took more time to create the PCI slot than it did to install and activate this device.
This device comes with a power cord that has a 4 pin Molex that plugs into the card itself and a different connector that plugs into a slot on my power supply lead.
With Windows 10 my unit booted back up immediately and it did not require the driver or data on the CD that comes with the device.
I immediately plugged in my new 4TB Passport and proceeded to move data.
I am quite happy with how well this worked because I am not an IT guy and merely followed the directions to achieve a fast return to productivity.
Most recent customer reviews
I have these installed in several computers and even a couple of servers, and they work flawlessly with large...Read more