Can I insert a 400G QSFP-DD optical module into a 400G OSFP switch port?

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Joe

You cannot plug a QSFP-DD transceiver directly into an OSFP port because they have physically different form factors. To make this work, you need to use an OSFP to QSFP-DD adapter. Simply insert the adapter into your switch’s OSFP port, and then plug your QSFP-DD transceiver into the adapter.

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Ross

While both modules support 400G data rates, OSFP modules are slightly wider and deeper than QSFP-DD modules, making them physically incompatible for direct insertion. However, the OSFP specification is designed to be backward compatible via an MSA-compliant OSFP to QSFP-DD mechanical adapter. By installing this adapter module into the OSFP slot, it provides the correct physical receptacle and electrical interface for your 400G QSFP-DD optic.

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Harper

Direct insertion is not possible due to size differences, but you can achieve this connection by following these steps:

Obtain an Adapter: Purchase a compatible 400G OSFP to QSFP-DD adapter module.

Install the Adapter: Slide the adapter into the target OSFP port on your network switch until it is firmly seated.

Insert the Transceiver: Plug your 400G QSFP-DD transceiver directly into the receptacle on the adapter until it clicks into place.

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Larry

No, direct insertion is not supported because OSFP ports are larger than QSFP-DD modules. You must purchase and install an OSFP to QSFP-DD adapter module to bridge the physical gap and allow the QSFP-DD transceiver to function properly in the OSFP slot.

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Sarah

You cannot insert the module directly due to the different physical dimensions of the two form factors. You have two primary solutions:

  • Module Adapter: Use an OSFP to QSFP-DD adapter to plug your existing QSFP-DD module into the OSFP port.
  • Direct Attach Cables (DAC/AOC): If you are simply trying to connect an OSFP switch to a QSFP-DD switch, you can bypass transceivers entirely and use a dedicated 400G OSFP to QSFP-DD DAC or AOC cable, which has an OSFP connector on one end and a QSFP-DD connector on the other.
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