3Com Isolan Fiber Optic Transceiver. 1680-5

3Com ISOLAN 10Mbps 10Base-FL ST Connector AUI Fiber Optic Micro Transceiver Module Mfr P/N 1680-5. Untested, sold AS IS. Five available..
Availability: 1 in stock
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These modules appear to be unused stock, from a corporate IT division.  They all are in excellent cosmetic condition, and are being sold at a very low price, and strictly AS IS.