The Huawei QSFP-4SFP10G-CU5M is a 5-meter passive breakout Direct Attach Copper (DAC) cable designed to split a 40G QSFP+ port into four independent 10G SFP+ channels, enabling flexible expansion and efficient bandwidth allocation in modern data center and enterprise network environments. This cable is ideal for connecting a single 40G switch uplink to four individual 10G server or switch ports, providing high-density, cost-effective connectivity without the need for optical transceivers.The DAC cable features a QSFP+ connector on one end and four SFP+ connectors on the other, supporting 40G-to-4×10G lane-based signal distribution with low latency and stable performance. Constructed with high-quality twinax copper conductors, it ensures excellent signal integrity across the full 5-meter distance while maintaining compliance with industry standards for 10G and 40G Ethernet connections.
Its passive design requires no additional power, reducing energy consumption and contributing to efficient heat management in high-density rack environments. The cable’s robust shielding minimizes electromagnetic interference (EMI), and the durable outer jacket provides strong physical protection during installation and operation. Despite its length, the QSFP-4SFP10G-CU5M remains flexible enough for effective routing through cable management systems in large racks and multi-row installations.
Fully compatible with Huawei switching platforms and a broad range of industry-standard QSFP+ and SFP+ devices, this breakout DAC cable is an excellent choice for top-of-rack (ToR) deployments, server aggregation, virtualized workloads, and distributed storage environments that require reliable and scalable high-speed interconnection.