New excellent condition fiber serial modem. Tested and confirmed to work with modern PCs and remote serial equipment. SMA type fiber, port powered, works with either DB25 of DB9(with an adapter) ports. Tested with data rates up to 115.2kbps, possible capable of more. Useful for ground loop isolation, and extending serial data over long distances.

I will be out of town Oct 30 to  Nov 4th, shipping will be delayed if items are purchased during these dates.