UGREEN (30773) PCIe to Dual USB-C 3.1 Expansion Card

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Top Highlights

• 2 USB-C PortsAdditional desktop connections.
• 10Gbps USB 3.1High-speed data interface.
• PCIe x4Internal expansion card.
• SATA Power15-pin auxiliary connection.

About the UGREEN 30773

The UGREEN 30773 is a dual-port USB-C PCIe expansion card intended for compatible desktop computers. It features two reversible USB Type-C data ports, a PCI Express x4 host interface and a 15-pin SATA power connector. Supporting USB 3.1 Gen 2 data transfer speeds up to 10Gbps, the card helps users add modern USB-C connectivity for compatible storage and peripheral devices. Regional distributor information identifies ASM1142 and ASM1543 controller components, while the internal PCIe design allows installation in supported desktop motherboard expansion slots.

Design & Performance

Dual USB-C Ports for Desktop Expansion

The UGREEN 30773 adds two USB Type-C ports to a compatible desktop computer. These reversible connectors provide convenient access for USB-C external SSDs, flash drives and other supported data peripherals.

The two ports are designed for USB data connectivity. USB-C is a connector type and does not automatically provide DisplayPort video output, Thunderbolt functionality or USB Power Delivery laptop charging.

USB 3.1 Gen 2 Data Transfer up to 10Gbps

The expansion card supports USB 3.1 Gen 2 connectivity with an advertised interface speed of up to 10Gbps. This offers additional bandwidth for compatible high-speed USB storage devices compared with older USB 3.0 connections.

The 10Gbps figure describes the supported USB interface speed, not a guaranteed file-copy rate. Actual performance depends on the PCIe host connection, connected storage device, USB cable and simultaneous usage of both ports.

PCI Express x4 Host Interface

The UGREEN 30773 connects to a compatible desktop motherboard through a PCI Express x4 interface. This internal expansion design allows users to add USB-C functionality without occupying an existing external USB port.

Before purchasing, check that the computer has a suitable available PCIe slot, enough internal clearance and an accessible rear expansion bracket opening. The card is not intended for ordinary laptops or computers without compatible PCIe expansion support.

15-Pin SATA Auxiliary Power

The card features a standard 15-pin SATA power input designed to receive auxiliary power from a compatible desktop power supply. This supports the operation of the card and its connected USB peripherals.

The SATA connector is used for power rather than SATA storage data. It should be connected to an appropriate PSU SATA power lead during installation. The card does not add SATA storage ports.

ASM1142 and ASM1543 Controller Components

Regional UGREEN distributor documentation identifies ASM1142 and ASM1543 components in the 30773 expansion card. These components support the card’s USB 3.1 data interface and Type-C connection design.

The controller information is useful when identifying suitable drivers and checking operating-system compatibility. Users should rely on drivers appropriate for their specific Windows version and hardware revision rather than installing unrelated USB controller software.

Practical Installation for USB-C Workstations

The UGREEN 30773 is suitable for desktop workstations that need additional USB-C data connections. It can help users connect external storage devices, transfer files and use supported USB-C accessories without replacing the motherboard.

Installation requires shutting down and unplugging the computer, fitting the card securely into the compatible PCIe slot and connecting SATA auxiliary power. After installation, verify that the USB controller is recognized by the operating system and install the appropriate driver if required.

Who It’s For

Desktop PC Users: Add USB-C ports to compatible computers. Office Professionals: Connect modern USB-C accessories and storage. Content Creators: Transfer files through supported high-speed USB storage devices. PC Technicians: Upgrade desktop systems with USB 3.1 connectivity. Workstation Users: Expand USB-C data access without replacing the motherboard. Home Users: Add convenient reversible USB-C connections for compatible peripherals.