PCI Express ASM1142 Type C 2-Port Enhanced expansion card

USB3.1 Type-C high-speed data transmission interface, and backward compatible with USB3.0, USB2.0 and USB1.1 devices.


USB3.1 HOST board: It looks almost the same as the original USB3.0 HOST Card. Please pay attention to the two details. 

1: The main control chip adopts ASMEDIA's latest USB3.1 bridge chip ASM1142. 

2: PCIe gold finger part consists of The upgrade of the PCI-E X1 in the 3.0 era to the PCI-E X4 will also make the signal stronger.


•  PCI Express Base Specification Revision 2.0 dual-lane (x2) 

•  Compliant with Universal Serial Bus 3.1 specification Gen2

•  Compliant with xHCI (eXtensible Host Controller Interface) specifications Revision 1.1.

•  Compliant with PCI Bus Power management interface Specification Revision1.2

•  Compliant with USB Attached SCSI protocol Revision1.1

•  Supports simultaneous operation of multiple USB 3.1, 3.0, USB 2.0 and USB 1.1 devices 

•  Supports USB data transfer rate of 10G/5G/480/12/1.5 Mbps.

•  Expands dual external USB3.1 Super-Speed plus Type-C ports on the system

•  Each USB port supplies maximum +5VDC / 900mA power output to USB device 

•  Built-in over current protection on each USB port 

•  Support device remote wakeup function from USB keyboard or mouse 

•  Built-in SATA-15pin power connector for receiving extra power supply from system 

•  Hot-swapping feature allows connect/disconnect device without powering down the system.




PCI Express Spec 2.0, Dual-Lane (x2)


Asmedia ASM1142(PCI Express USB3.1 Host controller)


eXtensible Host Controller Interface (xHCI) Rev1.1


Assigned by System

USB Communication


Universal Serial Bus 3.1 / 3.0 / 2.0 / 1.1

Data Speed

Super Speed+ (10Gpbs), Super Speed(5Gpbs)

High Speed(480Mbps), Full Speed(12Mbps), Low Speed (1.5Mbps)

No.of Port



USB3.1 Type-C port


+5VDC / Maximum 0.9A / each port

Note: Total power output capacity will be limited by system power supply.


Operation Temperature:0 ~ 60°C (32 to 140°F)

Operation Humidity:5 ~ 95% RH
Storage Temperature:-20 ~ 70°C (-4 to 158°F)
SystemVista / Win 7 / Win 8.x / Win 10 (X86/X64) (Windows in-box driver), Linux OS
Product codeMain productsAccessoriesRemarks
PO #: ST620ASM1142 Type C PCIe cardShort iron piece

Product manual

CD Drive disc

Online map
QQ Service