USB-C adapter TECHLY IADAP-USB4C-40G — USB-C to USB4, 40 Gbps data transfer

TECHLY USB-C adapter IADAP-USB4C-40G enables connection between USB-C hosts and USB4 devices while supporting data transfer rates up to 40 Gbps. The adapter is intended to provide a reliable physical and protocol bridge between compatible laptops, desktops, docking stations, external SSDs and other high-bandwidth peripherals that use the USB4 standard over a compact USB-C interface.

Advantages

The adapter supports full 40 Gbps throughput for high-speed file transfers and professional workflows. It maintains compatibility with the USB-C physical connector while implementing the USB4 protocol, reducing the need for multiple cables or proprietary connectors. Its compact form factor allows easy transport and integration into mobile setups without occupying additional ports on a host device.

Suitable for

• Transferring large multimedia files between external NVMe SSDs and computers
• Connecting USB4-capable docking stations to USB-C ports on laptops
• Using high-bandwidth peripherals such as external GPUs, audio interfaces and video capture devices
• Professional photo and video editing workflows that require fast data access

Key specifications

• Interface: USB-C physical connector compatible with USB4 protocol
• Maximum data transfer rate: up to 40 Gbps
• Compatibility: host and device support for USB4 required for full performance; backward-compatible with lower USB modes depending on connected devices
• Form factor: compact, portable adapter
• Power: passive adapter; power delivery behaviour depends on host and device capabilities

How to use

Insert the adapter into a USB-C port on the host device and connect the USB4 device using a compatible USB-C cable. Ensure both connected devices support USB4 to achieve the full 40 Gbps transfer rate; if either side supports only earlier USB standards, the connection will negotiate the highest mutually supported speed. For best results, use high-quality, certified USB-C/USB4 cables and avoid attaching additional hubs that could limit bandwidth.

Recommendations

To maintain optimal performance, use the adapter with devices and cables that explicitly support USB4 and 40 Gbps operation. Place connected high-bandwidth devices on a stable surface and allow adequate ventilation for any active external storage or enclosures. If power delivery or device charging is required, verify host and peripheral power profiles before use.