End Of Life
Scan code: LN54965 Manufacturer code: SST-EC04-E

Silverstone EC04-E PCI Express Card 4 Ports USB 3.0

4 Port Silverstone SST-EC04-E PCI Express Card with 4x USB 3.0

Thumbnail 1 : Silverstone EC04-E PCI Express Card 4 Ports USB 3.0 Thumbnail 2 : Silverstone EC04-E PCI Express Card 4 Ports USB 3.0 Thumbnail 3 : Silverstone EC04-E PCI Express Card 4 Ports USB 3.0
Scan code: LN54965 Manufacturer code: SST-EC04-E
End Of Life This product is no longer available to purchase
Delivery Options
  • By DPD to your specified address. | £5.48 Receive SMS with one-hour delivery window Weekend, timed and European delivery options are available at checkout

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    Weekend, timed and European delivery options are available at checkout
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  • SCANPROTECT Protect against installation damage for 28 days. More info

    ScanProtect is an enhanced warranty specifically designed and offered by Scan to reduce the risk of any mishap or damage to components during installation.

    Our aim with ScanProtect is to encourage our customers to upgrade or build their own PC confidently. For a small additional fee our customers are provided with complete peace of mind.

Product Overview

SuperSpeed USB 3.0 Adapter

The PEXUSB3S25 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 LP4 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).

Increased Transfer Speeds

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 optimises 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.

• Power requirement: 5Vdc via peripheral 15pin SATA power connector.
• Form factor: Low profile single lane (X1) PCI Express 2.0.
• USB 3.0 controller: NEC uPD720201.
• USB Ports: Two external ports and one internal dual port.
• USB bus power output: 5Vdc.
• Signal Reception Angle: USB 3.0 (5Gbit/s), USB 2.0 (480Mbit/s), USB 1.1 (12Mbit/s).
• OS Support: Microsoft Windows 10/8.1/8/7/Vista (32-bit, 64-bit), or future release versions.
• Port Interface: USB 3.0 (Max. 5Gbit/s) backwards compatible with USB 2.0.

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

12 months
Return to base
DOA Period:
28 days
RTB Period:
12 months
Manufacturer Contact Details
0871 472 4747
TekSpek Guides
USB 3.0
USB 3.0
Date Issued: 29th Jun 2010

USB 3.0, also known as SuperSpeed USB, is a buzzword you might have seen popping up repeatedly over the last 12 months or so. In this guide, we'll explain what it is, what it does, and what it could mean for you as the consumer.

Read More

PCI Express
PCI Express
Date Issued: 20th Oct 2008

A motherboard’s main job is to act as a conduit between the various hardware elements that make up a PC. It needs to be able to link the desired CPU(s), system memory, graphics card, hard drive(s), and add-in cards and enable them to work in harmony.

Read More

4 Port Silverstone SST-EC04-E PCI Express Card with 4x USB 3.0 is rated 4.0 out of 5 by 8.
Rated 4 out of 5 by from Does the job I needed a couple of extra USB ports and bought this one as the picture showed it with a black pcie slot/cover Sadly the one that has arrived had a silver cover but its not the end of the world (other than i paid more for this than a basic one) - the board is still all black though so this fits in well with my build. I am running the board without the additional SATA power at the moment and it seems to have no issues ( i do not have any high draw device attached or the internal usb3.0 header)
Date published: 2020-08-25
Rated 4 out of 5 by from Works in Windows 10 and Linux, bought 2 but 1 faulty I needed more USB ports. I could've got a hub but most of my PCI-Express slots are empty and this has the advantages of being a separate controller, powered by the system PSU (without needing another power brick like you'd usually need with a hub) and also not needing to find a place to put a hub so that it doesn't look untidy. The card provides 2 internal ports and 2 external ones, fortunately this is clear at least from the picture. The card needs to be connected to a SATA power connector. The internal ports are not useful to me but if you have a case with USB3 ports at the front but no native support on your motherboard for it, it'll probably help with that. Windows 10 automatically detects it and installs the necessary drivers on startup, so it was pretty much "plug and play". So far I have only been using it within Windows 10, however I have looked online and it seems the chipset is supported by Linux. Booting into Linux, lspci shows the controller and lsusb shows the devices that are attached to it (with dmesg also confirming the devices that it has seen during bootup). So, it certainly appears that it works under Linux - I have not extensively tested it there though. Unfortunately, one of the cards I purchased did not work at all. Scan are replacing this.
Date published: 2018-05-01
Rated 5 out of 5 by from Exceptional Item was easy to instal in my new pc, works as described very fast transfers. Had to re install drivers several times because windows 10 kept removing it.
Date published: 2018-02-12
Rated 1 out of 5 by from Cannot Get Drivers Working Looks good, specs brilliant however driver issues. They work then they don't, tried to get some advice from SCAN and the web but again get it too work but then after re-boot they don't. It is the USB3 drivers that are the problem. Shame SCAN did not reply to my help emails however kept asking for this review several times. Just using it for the USB2 ports which will always work.
Date published: 2017-02-07
Rated 4 out of 5 by from Only two external ports Look at the text, you will read 4 ports, but look at picture, you will see that two ports are internal/ Now need to find an adapter to get the other two ports out !
Date published: 2016-09-27
Rated 4 out of 5 by from Great Card for my Server used this card in my xpenology box / N54L Microserver to speed up backups with USB 3 drives and it gives me 100MB+ write speeds.
Date published: 2016-03-07
Rated 5 out of 5 by from Excellent buy This item was recommended by a buyer on another on line vendor. Was searching for a like item & read the reviews of buyers & this item was singled out so I thought I'd buy it & I was pleasantly surprised as I am a diy IT guy & this card word first time as it says on the tin. I have been able to convert a usb2 fairly new pc, into a usb3 fairly new pc. Excellent well worth it, product. Good price too. Well recommended as do I to
Date published: 2015-08-24
Rated 5 out of 5 by from Very pleased Excellent quick delivery,works as it should. Enabled use of twin usb 3.0 sockets supplied with new case used to re-house old motherboard.
Date published: 2014-03-26
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Why does this card also have a SATA power connector?

Why does this card also have a SATA power connector to the right of the 20-pin connector? Is power to this card needed or will it work without providing power to the card? Surely the power would come straight from the board?
Asked by: aires69uk
Technically you dont need it unless you are plugging in high power draw devices - hope this helps :)
Answered by: MartinMWWebb
Date published: 2020-08-25
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Silverstone EC04-E PCI Express Card 4 Ports USB 3.0
Silverstone EC04-E PCI Express Card 4 Ports USB 3.0