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Update data-box-cable-adapter.md
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includes/data-box-cable-adapter.md

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author: stevenmatthew
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ms.service: azure-databox
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ms.topic: include
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ms.date: 02/28/2025
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ms.date: 07/24/2025
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ms.author: shaas
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---
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> [!IMPORTANT]
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> Data Box Next Gen 120TB and 525TB devices use QSFP28 cables. SFP+/SFP28 cables used with the original 80TB devices cannot be inserted directly into Data Box Next Gen devices without an appropriate adapter.
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>
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> :::image type="content" source="media/data-box-cable-adapter/qsfp-sml.png" alt-text="Image highlighting the differences between the SFP+, SFP28, and QSFP28 cables." lightbox="media/data-box-cable-adapter/qsfp-lrg.png":::
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- Data Box Next Gen 120TB and 525TB devices use QSFP28 cables. For in house testing, the Q28-PC01 100G DAC QSFP28 Passive Direct Attach Copper Twinax cable was used. <br>
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- SFP+/SFP28 cables used with the original 80TB devices cannot be inserted directly into Data Box Next Gen devices without an appropriate adapter. Recommended QSFP to SFP+ adaptors are Mellanox MAM1Q00A-QSA or Cisco 100G QSFP28. <br>
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- To connect a QSFP28 device to an LC fiber backend using the Mellanox MAM1Q00A-QSA adapter or another compatible adapter, you need:
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- Mellanox MAM1Q00A-QSA Adapter – Converts the QSFP28 port to an SFP+ or SFP28 slot.
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- Compatible SFP+ or SFP28 Transceiver – Choose an optical transceiver that matches your LC fiber backbone (e.g., SFP+ SR for multimode fiber or SFP+ LR for single-mode fiber).
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- LC Fiber Cable – Connects the transceiver to your fiber backbone.
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> :::image type="content" source="media/data-box-cable-adapter/qsfp-sml.png" alt-text="Image highlighting the differences between the SFP+, SFP28, and QSFP28 cables." lightbox="media/data-box-cable-adapter/qsfp-lrg.png":::

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