USB 3.0 PCI-Express Interface Board with 4 Ports


- 4 ports allow simultaneous connection of more external HDDs, SSDs, flash memory and other devices
- SuperSpeed USB 3.0 interface transfer data at up to 5 Gbps*, 10X faster than USB 2.0, 480 Mbps transfer speed
- Fully backward compatible with USB 2.0
- Sequential read 371 MB/s†, 17% faster than conventional rates(IFC-PCIE2U3S:Sequential read 205 MB/s)
- 4 ports allow simultaneous connection of more external HDDs, SSDs, flash memory and other devices
- Hot-swappable support - USB devices can be attached or removed while the computer is on
- Driver supports Windows Server OS**, Windows 7, Vista and XP
- Internal power cable included
- Provides the highest performance among PCI-Express Interface Boards BUFFALO has to offer (as of September 2011)
- 3-year warranty

Consumers are using more devices featuring the SuperSpeed USB 3.0 interface. BUFFALO's IFC-PCIE4U3S PCI-Express Interface Board provides four USB 3.0 ports to keep more devices connected. USB 3.0 offers transfer speeds of up to 5 Gbps* for much faster transfer and backups and better performance from connected devices. The ports are also backward compatible with USB 2.0. The PCI-Express connection means the card fits easily, and the ports allow connection of USB 3.0 external HDD, USB flash memory, SSD, and other USB devices at the same time.

Upgrade your desktop computer to faster USB 3.0 interface

USB 3.0 transfers data at rates more than ten times that of USB 2.0 (5 Gbps* vs. 480 Mbps). This speeds up backup and transfer of photos, music, videos, documents, and other important data. The faster transfer rate also improves the performance of other peripheral devices like scanners and media players, and other peripheral devices supporting USB 3.0. A great solution to upgrade your current PC for use with SuperSpeed USB 3.0.

Equipped with 4 USB 3.0 ports

Each port enables connection of one USB 3.0 device, thus allowing up to a total of four devices such as external HDDs, USB flash memory, SSDs and wireless LAN adapters to be connected simultaneously. This decreases the need to purchase hubs for additional ports and reduces the hassle of constantly disconnecting and reconnecting various devices' USB cables.

Achieves highest speed among BUFFALO's interface board
(As of September 2011)

*Testing conducted by BUFFALO in September 2011
<Devices>External HDD: HD-QL12TU3R5, Motherboard: ASUS P6TD DELUXE, CPU: Intel Core i7 950 (3.06GHz), Chipset: Intel X58, Memory: DDR3GB, OS: Windows 7 Ultimate 64 bit, Benchmark software: CrystalDiskMark 3.0

Backward compatible with USB 2.0

All four ports are backward compatible, so the board will work not only with the high-performance USB 3.0 devices on the market now and in the future, but also with legacy USB 2.0 devices. No worries about connecting and using the latest or older USB devices.

Supports a variety of OS including Windows Server

In addition to running on Windows 7 and other conventional versions of Windows OS, this product also is compatible with Windows Server 2008 R2 and other server OS versions. This enables faster backups of servers handling large volumes of data.



Card Interface

Standard Compliance PCI Express

USB Interface

Standard Compliance USB 2.0 / USB 3.0
Number of Ports 4
Data Transfer Rates USB 3.0: Max. 5 Gbps USB 2.0: Max. 480 Mbps


Client OS Support Windows® 7 (32/64-bit), Vista® (32/64-bit),Windows® XP, Windows® 2000, Windows® Server 2003, Windows® Server 2008
Power Consumption
Dimensions (LxWxH, mm) 100.5 x 80.2
Weight 57 g
Warranty 3-Year

Package Contents

Contents USB 3.0 PCI-Express Interface Board IFC-PCIE4U3S CD-ROM Internal Power Cable Quick Setup Guide Warranty Statement
IFC-PCIE4U3S / 2013-07-09Product DatasheetDownload

You can compare the specifications of the product in this page. Click the model which you want to compare and click the “Compare”button.

  • IFC-EC2U3/UC2USB3.0 Interface Card
  • IFC-PCIE2U3S2USB 3.0 Interface Board for PCI-Express with 2 ports