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    AI Overview
    The
    QFP-MM85QG-SR8C is a high-performance 400GBASE-SR8 QSFP-DD (Quad Small Form-Factor Pluggable Double Density) optical transceiver module, designed for short-reach 400 Gigabit Ethernet links. It is a third-party compatible alternative often used in Cisco-based environments (compatible with QDD-400G-SR8-S).
    Key Features and Specifications:
    • Data Rate: 400Gbps (8 channels of 53.125Gbps PAM4).
    • Wavelength: 850nm (VCSEL technology).
    • Distance: Up to 100 meters over OM4 Multi-mode Fiber (MMF) or 70m over OM3.
    • Connector: MPO-16 APC (Angled Physical Contact).
    • Form Factor: Hot-pluggable QSFP-DD MSA compliant.
    • Diagnostics: Supports Digital Diagnostic Monitoring (DDM/DOM).
    • Operating Temp: Commercial range (0°C to 70°C).
    Applications:
    • 400G Ethernet links in data centers.
    • High-performance computing (HPC) networks.
    • Enterprise core and distribution layer applications.
    • Can support break-out configurations (e.g., 2x200G-SR4).
    This transceiver is frequently listed by suppliers like Fibertop and Optcore as a cost-effective, compatible replacement for Cisco and other major network equipment vendors.
    • Products - Fibertop
      * Arista® Compatible QDD-400G-SR8 400G QSFP-DD SR8 100m Transceiver. SKU: QDD-MM85QG-SR8C Product Highlights 8 independent paralle...
      Fibertop
    • Cisco QDD-400G-SR8-S Compatible 400G QSFP-DD SR8 ...
      Cisco QDD-400G-SR8-S Compatible 400G QSFP-DD SR8 100m Transceiver. SKU: QFP-MM85QG-SR8C. Product Highlights.
      Fibertop
    • Generic QSFPDD-400G-SR8 Compatible 400GBASE-SR8 ...
      Generic QSFPDD-400G-SR8 Compatible 400GBASE-SR8 QSFP-DD 850nm 100m Transceiver. US$ 139.00 (Excl. Third-party compatible transceiv...
      Optcore
    • QSFP-DD 400GBASE-FR4 2km Optical Transceiver - Fibertop
      Product Highlights * Transmission data rate up to 53Gbps per channel. * 8x53Gbps PAM4 transmitter and PAM4 receiver. * Hot Pluggab...
      Fibertop
    • Cisco 400G QSFP-DD Cable and Transceiver Modules Data ...
      Mar 3, 2026 — The Cisco 400GBASE Quad Small Form-Factor Pluggable Double Density (QSFP-DD) portfolio offers customers a wide variety of super hi...
      Cisco Systems
    • H3C QSFPDD-400G-SR8-MM850 Compatible 400GBASE ...
      H3C QSFPDD-400G-SR8-MM850 Compatible 400GBASE-SR8 QSFP-DD PAM4 850nm 100m DOM MPO-16/APC MMF Optical Transceiver Module, Breakout ...
      FS.com
    • QSFP-DD 400G-SR8 MM 850nm 100m 2.0dB CMIS4.0 MPO
      Product information. The TQD024-M85C-SO is a QSFP-DD form-factor transceivers for 400Gbps Ethernet applications. It is intended fo...
      Smartoptics
    • 400G QSFP-DD Cable and Transceiver Modules Data Sheet | FS
      Dec 21, 2022 — QSFPDD-LR4-400G ... It is compliant to IEEE 802.3bs, 400GBASE-FR4 Spec of 100G Lambda MSA group, and 400GAUI-8/CEI-56G-VSR- PAM4 s...
      FS.com
    • Products - Fibertop
      * Arista® Compatible QDD-400G-SR8 400G QSFP-DD SR8 100m Transceiver. SKU: QDD-MM85QG-SR8C Product Highlights 8 independent paralle...
      Fibertop
    • Cisco QDD-400G-SR8-S Compatible 400G QSFP-DD SR8 ...
      Cisco QDD-400G-SR8-S Compatible 400G QSFP-DD SR8 100m Transceiver. SKU: QFP-MM85QG-SR8C. Product Highlights.
      Fibertop
    • Generic QSFPDD-400G-SR8 Compatible 400GBASE-SR8 ...
      Generic QSFPDD-400G-SR8 Compatible 400GBASE-SR8 QSFP-DD 850nm 100m Transceiver. US$ 139.00 (Excl. Third-party compatible transceiv...
      Optcore
    Show all
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    My Ad Center

    Cisco QDD-400G-SR8-S Compatible 400G QSFP-DD SR8 ...


    Fibertop
    https://www.fibertopsfp.com › ...
    Fibertop
    https://www.fibertopsfp.com › ...
    Cisco QDD-400G-SR8-S Compatible 400G QSFP-DD SR8 100m Transceiver · 8 independent parallel optical channels · Each channel data rate up to 26.56GBaud with CDR. Read more

    400G Cisco Compatible


    Fibertop
    https://www.fibertopsfp.com › ...
    Fibertop
    https://www.fibertopsfp.com › ...
    SKU: QFP-MM85QG-SR8C Product Highlights 8 independent parallel optical channels Each channel data rate up to 26.56GBaud with CDR Hot Pluggable Up to 100m ...

    H3C QSFPDD-400G-SR8-MM850 Compatible 400GBASE ...


    FS.com
    https://www.fs.com › ... › 400G OSFP/QSFP112/QSFP-DD
    FS.com
    https://www.fs.com › ... › 400G OSFP/QSFP112/QSFP-DD
    The 400GBASE-SR8 module, MTP/MPO-16 connector, up to 100m over parallel OM4 multi-mode fiber. It is compliant to IEEE 802.3bs protocol and ... Read more
    $219.00 · Free 30-day returns

    400g qsfp-dd transceiver


    Fibertop
    https://www.fibertopsfp.com › ...
    Fibertop
    https://www.fibertopsfp.com › ...
    SKU: QFP-MM85QG-SR8C Product Highlights 8 independent parallel optical channels Each channel data rate up to 26.56GBaud with CDR Hot Pluggable Up to 100m ...

    FiberTop QSFP-DD 400G ER8 (8x50G) PAM4 40km Optical ...


    AliExpress
    https://www.aliexpress.com › item
    AliExpress
    https://www.aliexpress.com › item
    FiberTop QSFP-DD 400G ER8 (8x50G) PAM4 40km Optical Transceiver QFP ... QFP-MM85QG-SR8C 400G/ps QSFP-DD SR8 100M MMF Optical Transceiver MPO 0ºC to ...

    QSFP-DD 400G-SR8 MM 850nm 100m 2.0dB CMIS4.0 MPO


    Smartoptics
    https://smartoptics.com › Products
    Smartoptics
    https://smartoptics.com › Products
    The TQD024-M85C-SO is a QSFP-DD form-factor transceivers for 400Gbps Ethernet applications . It is intended for use in inter- and intra-connect applications ... Read more

    Generic QSFPDD-400G-SR8 Compatible 400GBASE- ...


    Optcore
    https://www.optcore.net › Product
    Optcore
    https://www.optcore.net › Product
    We provide a low-cost third-party 400G QSFP -DD SR8 equivalent that works with the generic QSFPDD-400G-SR8 transceiver. This QSFP -DD transceiver is intended for ... Read more
    $139.00 · In stock · $7 delivery · 30-day returns

    H3C QSFPDD-400G-SR8-MM850 Compatible 400G QSFP ...


    FiberMall
    https://www.fibermall.com › ...
    FiberMall
    https://www.fibermall.com › ...
    H3C QSFPDD-400G-SR8- MM850 Compatible 400G QSFP -DD SR8 supports to 100m over OM4 fiber, 8x26.5625 GBd (PAM4) EI and uses a wavelength of 850nm via MPO-16 ...
    $149.00 · 5.0 (4) · 2–5 day delivery · 30-day returns

    Cisco 400G QSFP-DD Cable and Transceiver Modules ...


    Cisco Systems
    https://www.cisco.com › ... › Data Sheets
    Cisco Systems
    https://www.cisco.com › ... › Data Sheets
    The QSFP -DD modules are our new generation of 400G transceiver modules based on a QSFP -DD form factor. Table 1. Feature and Benefits of Cisco QSFP -DD Modules ... Read more

    QSFP-DD 400GBASE-SR8 850nm 100m Transceiver


    Fibertop
    https://www.fibertopsfp.com › 400G QSFP-DD
    Fibertop
    https://www.fibertopsfp.com › 400G QSFP-DD
    SKU: QDD-MM85QG-SR8C. Product Highlights. 8 independent parallel optical channels . Each channel data rate up to 26.56GBaud with CDR. Read more

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