Taurus Ethernet Smart Cable Modules™

Flexible, high-performance Active Electrical Cables for AI and cloud connectivity

Download Portfolio Brief

Unleashing High Density AI Connectivity

  • Extend 200/400/800G Ethernet signal reach for high-density AI racks using Active Electrical Cables
  • Enhance signal integrity and bandwidth utilization for diverse AI topologies with thin and flexible cables
  • Scalable across diverse systems using standard connector form factors with gearbox and breakout options
  • COSMOS suite for performance optimization and seamless fleet management across dense AI platforms

Taurus Highlights

Optimizing Ethernet Connectivity for AI and Cloud

Extended Robust
Signal Reach

Over copper cables

Flexible Copper
Cables

Optimizing routing, service, and airflow

Enhanced Diagnostics
& Telemetry

Advanced capabilities through out-of-band management

Why Use Taurus Ethernet Smart Cable Modules?

Taurus enables robust, easy-to-design 100G/Lane Ethernet connectivity with high reliability and maximum uptime, featuring the COSMOS’ built-in suite for advanced fleet management, security, and deep diagnostics.

Robustness

  • Extended Cable Line Rate

    Future proof scalability for 200G/400G/800G

  • Low Power

    Uses 50% less power than Active Optical Cables

  • Low Latency

    Low latency operation at <50ns

  • Security

    Advanced security features help prevent malicious attacks of unauthorized firmware loading, module diagnostics access, and configurations

Easy System Design

  • Thin Cable Gauge

    Up to 34AWG

  • Fewer Twinax Pairs

    8 pairs at 200G/400G/800G reduces overall external diameter of cables

  • Extended Reach

    Up to 7m of reach

  • Flexible Supply Chain

    Taurus Smart Cable Modules are compatible with multiple cable vendors for easy second sourcing of active cable assembly

Fleet Management

  • Quick Debug

    Self-test features enable rapid troubleshooting

  • Deep Diagnostics

    Cable-side and host-side diagnostics enable easy management of entire fleets

Use Cases

Switch-to-Server

Enabling an “Active” plus “Smart” approach to higher-bandwidth Switch-to-Server Ethernet interconnects and Switch-to-NIC bandwidth utilization

Resources

Ordering Information

Orderable Part NumberDescriptionMax Data GenCable Line RateModePackage / ConnectorOrdering
EM400-QDX400G QSFP-DD Taurus Smart Cable Module400G50G/Lane, 100G/LanePAM4QSFP-DDContact Us, https://www.asteralabs.com/product-details/em400-qdx/
EM400-EPS400G OSFP Taurus Smart Cable Module400G50G/Lane, 100G/LanePAM4OSFPContact Us, https://www.asteralabs.com/product-details/em400-eps/
EM800-EPS800G OSFP Taurus Smart Cable Module800G100G/LanePAM4OSFPContact Us, https://www.asteralabs.com/product-details/em800-eps/
EM800-QDX800G QSFP-DD Taurus Smart Cable Module800G100G/LanePAM4QSFP-DDContact Us, https://www.asteralabs.com/product-details/em800-qdx/
EM200-QDX200G QSFP-DD Taurus Smart Cable Module200G25G/LaneNRZQSFP-DDContact Us, https://www.asteralabs.com/product-details/em200-qdx/

Astera Labs Celebrated as a Top Workplace in the Bay Area – Again!

We are thrilled to share that Astera Labs has been recognized for the third consecutive year as one of the Best Places to Work in the Bay Area by the Silicon Valley Business Journal and the San Francisco Business Times. This year, we ranked 11th on the Large Company list (200-499 employees) – a strong testament to our people, culture, and purpose-driven missionWhat makes Astera Labs…

Read more

Advancing AI with AMD: Delivering Purpose-built Connectivity for Scale-up Architecture with UALink

Back in 2017, the founders of Astera Labs identified a looming bottleneck in data center infrastructure. While AI models were evolving at an unprecedented pace, traditional connectivity infrastructure wouldn’t keep up. From the beginning, Astera Labs set out with a clear mission: to deliver purpose-built connectivity solutions for the entire AI rack.Yesterday, we were honored to join…

Read more

AI Just Outgrew The Server. The Rack-Scale Era Is Here.

The fastest path to AI Infrastructure 2.0 is through purpose-built solutions developed within open ecosystemsWe’ve crossed the Rubicon into AI Infrastructure 2.0. There’s no going back.The evidence is everywhere. The latest reasoning models demonstrate breakthrough capabilities through multi-step processing that demands an order of magnitude more compute than traditional inference….

Read more

Astera Labs and Alchip Announce Strategic Partnership to Advance Silicon Ecosystem for AI Rack-Scale Connectivity

Hyperscalers benefit from seamless integration of purpose-built compute and connectivity solutions to rapidly deploy AI infrastructure at scale– SANTA CLARA, Calif. and TAIPEI, Taiwan – June 16, 2025 – Astera Labs, a leading provider of purpose-built connectivity solutions for AI and cloud infrastructure, and Alchip Technologies, the high-performance ASIC leader, today announced a…

Read more

Astera Labs Expands Collaboration with NVIDIA to Advance NVLink Fusion Ecosystem

NVLink connectivity solutions will further bolster Astera Labs’ Intelligent Connectivity Platform, expanding options for hyperscalers to deploy high-performance, scale-up networks – SANTA CLARA, CA, U.S. – May 19, 2025 – Astera Labs, Inc. (Nasdaq: ALAB), a global leader in semiconductor-based connectivity solutions for AI and cloud infrastructure, today announced it is collaborating…

Read more

Astera Labs Announces Financial Results for the First Quarter of Fiscal Year 2025

Record quarterly revenue of $159.4 million, up 13% QoQ and 144% YoYStrong demand for PCIe scale-up and Ethernet scale-out in custom ASIC platformsPCIe 6 connectivity portfolio poised to ramp in leading GPU-based rack-scale systems starting in Q2 – SANTA CLARA, CA, U.S. – May 6, 2025 – Astera Labs, Inc. (Nasdaq: ALAB), a global leader in semiconductor-based connectivity…

Read more

Astera Labs to Share Vision for Expanding Opportunities in AI Infrastructure with UALink

With broad industry support from 100+ companies in the UALink Consortium and the ratification of the UALink 200G 1.0 specification, UALink is emerging as the essential open standard for scale-up AI infrastructure – SANTA CLARA, CA, U.S. – May 5, 2025 – Astera Labs, Inc. (Nasdaq: ALAB), a global leader in semiconductor-based connectivity solutions for AI and cloud infrastructure,…

Read more

First Look Demo: Scorpio X-Series Fabric Switch

Scorpio X-Series Fabric Switches are architected to deliver the highest back-end bandwidth for AI scale-up (GPU-to-GPU communications.) Learn how Scorpio X-Series enables direct memory access across the fabric, allowing accelerators to read and write data to each other without PU intervention. This design significantly enhances data parallelism, reduces latency, and improves scalability for…

Read more

First Look Demo: Aries 6 Smart Gearbox

See the industry’s first purpose-built PCIe gearbox solution that intelligently bridges the performance gap between the latest PCIe 6 devices and existing PCIe 5 ecosystem.Learn how Aries 6 Gearbox solves the challenge of degraded-performance in mixed-generation systems, ensuring full utilization of high-speed lanes and accelerating the deployment of next-generation AI platforms while…

Read more

NVIDIA GTC 2025: End-to-End PCIe 6 Interop

At NVIDIA GTC 2025, Astera Labs showcased PCIe 6 end-to-end connectivity with our Scorpio P-Series Fabric Switch interconnected to Micron’s PCIe 6 SSD, an NVIDIA Blackwell GPU through our Aries 6 Smart Retimer, and an NVIDIA CX7 NIC card, with an Intel CPU connected on the upstream side. The demonstration shows how our Scorpio P-Series Fabric Switch can support mixed mode traffic, while…

Read more