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- two desktop computers running GNU/Linux operating system, each
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having at least one free PCI-Express x4 slot;
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- two [SPEC](https://www.ohwr.org/project/spec) boards;
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- a pair of SFP transceivers (AXCEN AXGE-1254-0531 and AXCEN
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AXGE-3454-0531 are
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recommended);
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- two [SPEC](https://www.ohwr.org/project/spec/wiki) boards;
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- a pair of single fiber, bidirectional SFP transceivers (the list of
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WR compliant SFPs available
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[here](https://www.ohwr.org/project/white-rabbit/wikis/sfp) );
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- two Digital IO FMC
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([DIO](https://www.ohwr.org/project/fmc-dio-5chttla)) boards;
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([DIO](https://www.ohwr.org/project/fmc-dio-5chttla/wiki)) boards;
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- a roll of G652, single mode fiber.
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Note: All those components can be bought as a White Rabbit Kit from
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[Seven Solutions](https://www.ohwr.org/companies/seven-solutions)
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Note: Described configuration uses Axcen AXGE-3454-0531 for WR Master
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site and Axcen AXGE-1254-0531 for WR Slave, since those are the
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transceivers included in White Rabbit Kit.
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## Step-by-step to get your boards synchronized
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1\. Plug one DIO FMC board to each of your SPECs.
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\[photo here\]
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2\. Plug the blue SFP transceiver (AXGE-1254-0531) to the SPEC board
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which will be later configured as WR Master.
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2\. Plug the SFP transmitting downstream
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([table](https://www.ohwr.org/project/white-rabbit/wikis/SFP#compliant-sfp-types))
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to the SPEC board which will be later configured as WR Master.
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\[photo here\]
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3\. Plug the violet SFP transceiver (AXGE-3454-0531) to the SPEC board
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which will be later configured as WR Slave.
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3\. Plug the SFP transmitting upstream ("table": (AXGE-1254-0531) to the
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SPEC board which will be later configured as WR Slave.
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\[photo here\]
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