Detailed Specifications
HPE R9B41A 400G QSFP-DD MPO-16 SR8 Transceiver
Overview
The HPE R9B41A is a single-port QSFP-DD form-factor transceiver designed for ultra-high-bandwidth server- and switch-fabric uplinks inside the data centre. It provides a 400 Gb/s line rate via an SR8 architecture over multimode fibre, making it suitable for short-reach (up to 100 m on OM4/OM5 MMF) connections between high-density switching fabrics, aggregation tiers or compute clusters. Engineers can use this module to collapse multiple lower-speed links into one compact high-speed link, simplify cabling and conserve line-card slot space in network chassis. It integrates with modern HPE/Aruba networking platforms that support QSFP-DD ports and ensures compatibility with the vendor's fabric-ready infrastructure.
Key Features
Single-port QSFP-DD supporting 400 Gb/s throughput
MPO-16 connector for high fibre-density short-reach links
Short-reach SR8 optics: up to 100 m on OM4/OM5 multimode fibre
Digital Optical Monitoring (DOM) support for link-health visibility
Technical Specifications
| Specification | Value |
|---|
| Brand | HPE |
| Part Number | R9B41A |
| Product Type | 400 G QSFP-DD MPO-16 SR8 Transceiver |
| Link Speed | 400 Gb/s |
| Port Count | 1 |
| Form Factor | QSFP-DD |
| Connector Type | MPO-16 (multi-fibre push-on) |
| Fibre Mode | Multimode fibre (MMF) |
| Max Reach | Up to 100 m on OM4/OM5 MMF |
| Wavelength | 850 nm eight-lane (8 × 50 Gb/s) PAM4 |
| Digital Optical Monitoring | Yes |
| Temperature Rating | Commercial (0 °C to 70 °C) |
| Dimensions (W × D × H) | Approx. 0.71″ × 0.51″ × 5.00″ (≈18 mm × 13 mm × 127 mm) |
| Weight | 0.14 lb (≈ 63 g) |
