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HPE JL251A Networking QSFP 40G Transceiver View larger

HPE JL251A 40 GbE QSFP+ BiDi LC Transceiver Module

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40 Gb/s QSFP+ BiDi multimode fibre transceiver
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Detailed Specifications

HPE JL251A X140 40G QSFP+ LC BiDi 100 m MM Transceiver

Overview

The HPE JL251A is a 40 Gigabit Ethernet QSFP+ transceiver module designed for rack-server or data-centre connectivity over multimode fibre. It uses bidirectional (BiDi) signalling over a duplex LC connector pair to achieve 40 Gb/s link speed within a compact QSFP+ form factor. Rated for up to approximately 100 metres over OM4 multimode fibre, it enables high-density uplinks between switches or in aggregation layers without the need for multiple fibre strands. The module is hot-pluggable and fits into standard QSFP+ ports, making it suitable for high-throughput inter-rack or top-of-rack switching environments. Because it supports BiDi operation and reduces fibre-pair usage, it is particularly effective where cable strands are constrained or where future bandwidth upgrades are anticipated.

Key Features

  • QSFP+ form-factor supporting 40 Gb/s data throughput

  • Bidirectional optical transmission over a single multimode fibre pair

  • Duplex LC connector for ease of deployment and fibre-management

  • Up to ~100 m reach over OM4 multimode fibre in typical data-centre environments

Technical Specifications

SpecificationValue
Brand HPE
Part Number JL251A
Product Type X140 40 Gb/s QSFP+ LC BiDi Transceiver
Link Speed 40 Gb/s
Form Factor QSFP+
Connector Type Duplex LC
Fibre Type Multimode (50/125 µm)
Maximum Reach Up to ~100 m (on OM4)
Wavelength Approx. 850 nm (BiDi twin wavelengths)
Operating Temperature 0 °C to ~70 °C
Dimensions (W × D × H) ~0.72″ × ~4.80″ × ~0.51″ (18.3 mm × 121.9 mm × 13 mm)
Weight ~1.40 lb (~0.635 kg)
Hot-Pluggable Yes
Typical Use Case Switch-to-switch or aggregation uplink in data-centres
Compliance 40GBASE-SR-BiDi, QSFP+ MSA compliant

  • All packages are shipped same day if the order is placed before 3PM CST

    We use UPS/FedEx to ship the packages with different service levels offered by UPS/FedEx

    Overnight Shipping take 1 business day
    Expedited Shipping take about 2-3 business days
    Ground shipping take about 3-5 business days

    You can select the desired service level at Checkout and we will make sure the package is shipped as per the selected service level.

  • We Accept

    i) PayPal
    ii) All Credit & Debit Cards
    iii) Purchase Orders
    iv) Check
    v) Bank Transfer/ACH/Wire Transfer

    To process the order through Paypal/CC, you can simply checkout and process the payment.

    If you want to issue us Purchase Order/Check/Bank Transfer, Please contact us at the following details

    Call: 469.458.9636
    Email: sales@dcsupplies.net

  • If you have any queries, please contact us at the following details and we will be happy to help

    Call
    469.458.9636
    469.458.9638

    Email
    sales@dcsupplies.net

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