DAC cable CBO MCP1600-E004E26 5 m QSFP28 compatible direct attach copper

Direct attach copper (DAC) cable CBO MCP1600-E004E26 is a 5 m passive QSFP28-compatible copper interconnect intended for short-reach connections in data center and enterprise networking environments. The cable establishes a direct, low-latency electrical link between QSFP28 ports, supporting 100 Gigabit Ethernet (100GbE) connections for switches, servers, and network adapters. Its fixed-length design and plug-and-play nature eliminate the need for optical transceivers where short-distance electrical links are appropriate.

Advantages

The DAC cable offers a cost-effective and energy-efficient alternative to optical transceivers for short-distance 100GbE links. Its passive copper construction provides predictable latency and stable electrical performance without additional power requirements. The integrated QSFP28 connectors ensure compatibility with devices that accept QSFP28 passive direct-attach copper assemblies, delivering a reliable physical connection with no field termination required.

Suitable for

• Short-reach connections between top-of-rack switches and aggregation switches
• Direct server-to-switch links in rack environments
• Interconnects between high-performance network adapters and switches
• Temporary or permanent cabling for lab and test setups requiring 100GbE

Key specifications

• Length: 5 meters
• Interface type: QSFP28-compatible direct attach copper
• Data rate support: 100 Gigabit Ethernet (100GbE)
• Cable type: Passive copper twinax assembly
• Connector: QSFP28-style plug with standardized pinout for electrical 100GbE links
• Use environment: Short-reach, intra-rack and inter-rack data center links

How to use

Insert each QSFP28 connector into the corresponding QSFP28 port on your switch, server, or network adapter until the latch engages. Ensure both ports are powered down or follow hot-plug guidelines from your hardware vendor if available. After insertion, verify link status and negotiate speed and lane configuration through device management interfaces. For removal, release the connector latch and pull straight out to avoid damaging ports or cable ends.

Recommendations

Use this 5 m DAC cable for short-distance 100GbE connections within the same rack or between adjacent racks. Avoid routing the cable near sources of strong electromagnetic interference and maintain bend radii recommended for twinax assemblies to preserve signal integrity. Confirm device compatibility with QSFP28 passive direct-attach copper cables and check switch or adapter firmware and settings for optimal link negotiation.