From what you describe, you're pretty much stuck with a small ThinNet segment to the existing hub. This means two T connectors, two terminators and a segment of cable.
I'm a bit surprised, though, that the card is BNC-only. I'd expect an Ethernet card of the era to have both BNC and a 15-pin AUI connector. (Are you sure there isn't one and you think it's a video port?) If you had the AUI connector, then you could just get a transceiver to go straight to RJ-45 and from there into the hub.
John
I'm a bit surprised, though, that the card is BNC-only. I'd expect an Ethernet card of the era to have both BNC and a 15-pin AUI connector. (Are you sure there isn't one and you think it's a video port?) If you had the AUI connector, then you could just get a transceiver to go straight to RJ-45 and from there into the hub.
John