Direct Attach Cable BlueOptics QSFP28 100GBASE-CR4 26AWG 3m (980-9I62H-00C02A-BL)

The BlueOptics QSFP28 Direct Attach Cable is a passive 100GBASE-CR4 twinax assembly designed for short-reach, high-bandwidth connections between QSFP28 ports. At 3 meters length and constructed with 26AWG conductors, this blue direct attach cable delivers a reliable copper link for 100 Gigabit Ethernet interconnects in rack and chassis environments. It is intended for use where a passive DAC provides sufficient signal integrity without the need for optical transceivers.

Advantages

This direct attach cable offers low latency and high throughput for 100G links while providing a cost-effective alternative to optical modules for short distances. The QSFP28 form factor ensures compatibility with standard 100G QSFP28 ports, and the twinax construction with 26AWG wiring supports the electrical characteristics required for 100GBASE-CR4 operation. The fixed 3 m length simplifies rack planning and reduces the need for additional patching hardware.

Suitable for

• Short-reach interconnects between 100G QSFP28 ports in top-of-rack switches
• Direct connections between routers, switches and network appliances within the same cabinet or adjacent racks
• High-density data center environments where passive copper DACs are preferred for cost and power efficiency

Key specifications

• Interface: QSFP28 to QSFP28
• Standard: 100GBASE-CR4
• Cable type: Passive twinax copper
• Conductor gauge: 26AWG
• Length: 3 meters
• Color: Blue
• Typical use: Short-reach 100 Gigabit Ethernet links

How to use

Insert each QSFP28 connector into the corresponding QSFP28 port on network devices until the latch engages. Ensure both devices support passive Direct Attach Copper (DAC) connections and the same 100GBASE-CR4 electrical standard. Route the 3 m cable to avoid sharp bends and excessive strain on the connectors; maintain recommended bend radius for twinax cables and secure the cable to prevent movement within the rack.

Usage recommendations

Verify device compatibility and firmware settings for passive QSFP28 DACs prior to deployment. For best performance, avoid extended exposure to high temperatures and repeated mechanical stress on the cable assembly. Use the 3 m length for intra-cabinet or adjacent-rack connections; for longer spans, consider active copper or optical solutions.