More from the Manufacturer More from the Manufacturer. Manufacturer Part Number J4859C10PKST. Startech Gigabit Fiber Sfp Transceiver - Hp J4859c Compatible - Sm / Mm Lc W/ Ddm - 10km [6.2 Mi.]. They provide a versatile and cost-effective solution that's compatible with a multitude of Gigabit fiber networking devices.
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