Detailed Specifications
EXTREME NETWORKS 40G-DACA-QSFP1M - Direct Attach Copper Cable
Overview
The EXTREME NETWORKS 40G-DACA-QSFP1M is an enterprise-grade, high-velocity active direct attach copper (DAC) twinaxial cable assembly engineered for top-of-rack data center architectures and high-density storage networking loops. This active copper interconnect provides a high-reliability, low-latency alternative to optical transceivers for ultra-short range hardware connections. It resolves the excessive thermal footprints and power budgets typical of fiber links by relying on optimized internal equalization circuitry integrated directly within the pluggable housings.
The assembly features twinax active copper cabling terminated with hot-pluggable Quad Small Form-factor Pluggable Plus (QSFP+) MSA-compliant connectors on both endpoints. Operating over four independent transmit and receive channels, the cable supports an aggregate data throughput of 40 Gbps by driving 10 Gbps per lane. The integrated active booster components electrically regenerate digital signal wave patterns across the 1-meter span, enabling clean link negotiation and superior Bit Error Rate (BER) execution on high-throughput switching fabrics.
Designed for specialized deployment inside multi-tenant data centers, financial server clusters, and enterprise core network environments, this 1-meter cable bridges core switches, high-capacity routers, and network-attached storage nodes housed in adjacent rack spaces. It interfaces natively with ExtremeXOS, SLX, and VDX operating platforms, assuring complete configuration sync and port diagnostics. Avoid deploying this active DAC cable for extended inter-row structural vertical drops exceeding 1 meter, or within foreign non-MSA compliant architectures that mandate passive-only link signatures.
Key Features
Active signal equalization extends link margin on 40G infrastructure.
Twinaxial active copper architecture lowers hardware procurement cost.
Four 10Gbps parallel lanes deliver a combined 40Gbps line throughput.
Factory-terminated QSFP+ housings enable hot-swappable deployment.
Full MSA SFF-8436 conformance preserves cross-platform compatibility.
Specifications
| Spec Parameter | Technical Data |
| Brand | EXTREME NETWORKS |
| Part Number | 40G-DACA-QSFP1M |
| Product Type | Direct Attach Copper Cable |
| Cable Assembly Type | Active Twinaxial Copper Cable Assembly (ADAC) |
| Connector Type A | QSFP+ (Quad Small Form-factor Pluggable Plus) |
| Connector Type B | QSFP+ (Quad Small Form-factor Pluggable Plus) |
| Maximum Data Rate | 40 Gbps Aggregate (4 x 10.3125 Gbps Lanes) |
| Nominal Impedance | 100 Ohms Differential |
| Copper Wire Gauge | 30 AWG Solid Copper Conductors |
| Native Compliance | SFF-8436, IEEE 802.3ba 40GBASE-CR4, QSFP+ MSA |
| Hardware Targets | Extreme SLX9150, SLX9250, VDX6740, VDX6940 Platforms |
| Core Protocols | 40G Ethernet, InfiniBand QDR, 10G/40G Fibre Channel |
| Supply Voltage | 3.3V DC (Nominal Host Power Allocation) |
| Operational Range | Commercial 32°F to 158°F (0°C to 70°C) |
