The 4000 series of fiberoptic Bit-Drivers and multiplexers comes in single-, dual-, or quad-port styles to maintain one to 28 remote users. They support the Express Twinax protocol at 2 Mbit/s or legacy systems at 1 Mbit/s. Status indicators show power, sync, and basic or fast protocols. Fiber connectors are standard for both single- and multimode units with other options available.

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