Key Takeaways
1. Qnap launched the QNA-UC25G2SF USB4 network adapter, succeeding the QNA-UC10G2SF.
2. The adapter supports 2x 25 GbE with redundancy, achieving actual bandwidth of 25 Gbps, and up to 50 Gbps with specific configurations.
3. It features a fanless design with a large heatsink and requires USB Type C Power Delivery for operation.
4. The adapter is compatible with Windows and Linux, with macOS support in development, and is expected to release by the end of the year.
5. Pricing details are not yet announced, but the previous model is priced at $549.
During its global tour, Qnap has unveiled an innovative USB4 network adapter that boasts notably high speeds. True to Qnap’s style, this adapter carries a rather lengthy name: QNA-UC25G2SF. It essentially serves as the successor to the QNA-UC10G2SF, which will still be available for the moment.
Specifications and Features
The metallic casing contains enough room for two SFP28 transceivers and DACs (direct attached cables), as long as the distance to the switch is relatively short. Qnap states that DACs are generally effective for distances between roughly 10 to 16 feet. Performance may decline if you go beyond that range, where a transceiver with fiber optics might be a better choice. The range will then depend on the module (wavelength) and the type of cable used.
In spite of that, this new adapter delivers 2x 25 GbE with redundancy, providing 25 Gbps of actual bandwidth. With SMB Multichannel or a well-configured LACP setup, it can even achieve 50 Gbps.
Cooling and Power Requirements
The network adapter is designed to operate without fans for cooling. Instead, it features a relatively large heatsink similar to the one found in the UC10 series. The device is likely to get quite warm, as indicated by a caution label. This is further suggested by the notably higher power consumption.
The QNA-UC25G2SF requires USB Type C Power Delivery. In contrast, the previous model operated with USB Type C Current. Since many laptops do not support USB PD for power output, this adapter includes a second port that can deliver up to 27 watts. The main USB port is exclusively for data transmission.
Compatibility and Pricing
Qnap’s latest adapter is compatible with both Windows and Linux operating systems, while support for macOS is still under development. The QNA-UC25G2SF is expected to be available around the end of the year. It won’t be inexpensive, although Qnap has yet to announce an official retail price. For context, the previously mentioned QNA-UC10G2SF is listed for $549 on Amazon.
