■ Includes USB 3.1 internal 19pin connector

■ PCI-E Gen2.0 x2, throughput up to 10Gbps

■ Compliant with eXtensible Host Controller Interface (XHCI) specification Revision 1.1

■ Compliant with USB Attached SCSI Protocol (UASP) Revision 1.0

■ Includes optional low profile slot cover for supporting low profile cases



Model No. SST-ECU04
Power requirement 5V via SATA 15-pin power connector
Form factor Low profile - PCI-E 2.0 x2 (10Gbps)
USB Ports Internal 19pin connector for dual USB 3.1 ports
USB 3.1 controller ASMedia ASM1142
Transmitting Speed USB 3.1 (10 Gbps), USB 3.0 (5 Gbps), USB 2.0 (480 Mbps), USB 1.1 (12 Mbps)
Operating system support Windows 7 (32bit/64bit)*, 8/8.1/10 (32bit/64bit)**, Ubuntu/Linux/Mac OS***
Power Management Support USB 3.1 and USB 2.0 link power management
Current protection Support over current detection and protection
Extra UASP function
Remark :
* If your OS version is Windows 7 or earlier, please install driver (available from SilverStone website) prior to using the ECU04.
** Windows 8 or 8.1, 10 supports ECU04 automatically so you do not need to install additional driver for it.
*** User should check for XHCI function in Ubuntu/Linux or Mac OS, if computer system supports XHCI function then it can support ECU04 automatically without additional driver installation.
**** If your operating system is incompatible with the expansion cards developed by SilverStone, such that your device can not be detected or recognized, please update your motherboard’s driver or BIOS to the latest version. You may also try executing compatible mode in your operating system and select previous versions of operation system to install driver required by the expansion cards.

  • Q&A

Describe Ver Size Download
ECU04 Manual v1.0 1,078 KB
ECU04 driver_win7 V116220 3,247 KB
ECU04 High resolution photos 5,217 KB
ECU04 eDM (ecu04-edm-en.pdf)   177 KB

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For internal 19-pin USB header cable, we highly recommend the user could choose the cable length with 300 ~ 500mm USB internal 19-pin header cable, and the cable should satisfied the SuperSpeed+ USB 3.1 requirement. On the other hand, the maximum cable length (internal plus external cables) should not be exceeded 1 meter.