CBO SFP28 passive DAC copper cable SFP28-DAC-0.5M 0.5 m

Passive copper direct attach (DAC) cable BlueOptics CBO SFP28-DAC-0.5M is a pre-terminated short-reach connection cable with a 0.5 m length designed for SFP28 ports. It provides a low-power, low-latency physical link for 25GbE and compatible high-speed interfaces between switches, servers and other network devices in rack and data center environments. The cable is factory-terminated on both ends to maintain signal integrity and simplify rack cabling without additional transceivers.

Advantages

This passive SFP28 DAC cable offers predictable electrical performance and reduced power consumption compared with active optical transceivers. Its short 0.5 m length minimizes signal degradation and latency for top-of-rack or adjacent-rack connections. Pre-termination eliminates the need for field termination and reduces installation time. The cable is compatible with standard SFP28 ports for straightforward integration into existing 25GbE-capable infrastructure.

Suitable for

• Short-reach connections between top-of-rack switches and servers
• High-density patching in data centers and server rooms
• Interconnects between switches within the same rack or adjacent racks
• Low-latency links for storage, virtualization and compute clusters

Key specifications

• Connector type: SFP28 on both ends
• Length: 0.5 m
• Media: Passive copper direct attach
• Supported data rate: 25 Gb/s (25GbE compatible)
• Power consumption: passive (no active electronics in-line)
• Form factor: low-profile, suitable for high-density racks

How to use

Insert each SFP28 connector into the corresponding SFP28 port on network equipment until the connector latches. Ensure that both connected devices support passive DAC cables and the intended 25GbE link speed. Configure network interfaces on connected devices for the correct speed and duplex settings if not negotiated automatically. Route the cable to avoid sharp bends and heavy strain; secure with cable management to maintain airflow and rack organization.

Recommendations

Use this 0.5 m passive DAC for short, direct connections inside racks or between adjacent racks. Verify port compatibility and vendor interoperability in your environment. Avoid repeated unplugging under load and keep bend radius above the manufacturer’s minimum to preserve signal integrity.