HPE 747698-B21

BladeSystem C-Class 40 Gb QSFP+ MPO SR4 Transceiver 

The HPE 747698-B21 is a 40 GbQSFP+ optical Transceiver module tailored for the HPE BladeSystem C-Class environment. Supporting IEEE 802.3ba 40GBASE-SR4 over multimode fiber, this module enables connections up to ~300 meters using OM3/OM4 cabling. It features a compact QSFP+ form factor with an MPO (MTP-style) connector and operates at 850 nm wavelength. Built for high-speed, low-latency communication, it is ideal for aggregating switch uplinks within blade enclosures or extending connectivity across data center zones. As a refurbished item, it offers enterprise-grade performance at a reduced cost.

Features

The 747698-B21 Transceiver offers 40 GbE connectivity over four parallel 10 Gb lanes (SR4). Designed for multi-mode fiber, it's capable of reaching distances up to 300 meters on OM3 fiber and up to 400 meters on OM4 fiber, making it versatile for internal network interconnects across campus or data center spaces. The MPO connector simplifies cabling density and alignment while supporting high-speed applications that demand minimal latency. Engineered for reliability, it supports Digital Diagnostics Monitoring (DDM/DOM), allowing real-time monitoring of temperature, optical power, and voltage. Operating within a temperature range of 0 °C to 70 °C, and drawing a maximum of approximately 1.5 W from a standard +3.3 V supply, it balances performance with a low power footprint. 

Advanced Options

Its QSFP+ hot-swappable design enables simple plug-in replacements or upgrades with minimal system disruption. When refurbished, the module is typically performance-tested, cleaned, and confirmed fully functional—providing enterprise-quality capability at a fraction of OEM cost.While refurbished, the HPE 747698-B21 retains OEM-grade reliability when sourced from reputable vendors. Refurbishment processes generally include electrical and optical testing, ROM validation, and ensuring clean connectors—allowing dependable integration with HPE blade networking infrastructure. The DOM feature supports proactive health monitoring, helping spot signal degradation or temperature issues before they escalate.