All, I will not get around to using this, so it’s free for shipping (or for pickup).
Cabletron MR-9000C ethernet repeater. One AUI port designed to connect to a thick-net bacbone via an adaptor which I don’t have. 8 thin-net coax ports, LED indicators for each. Also includes several sections of thin coax cable and connectors, and power cord as well as user’s manual. In original (plain cardboard) box and includes anti-static foam and bag for shipping. The user’s manual appears to be on-line at: http://office.manualsonline.com/manuals/mfg/cabletron_systems/mr9000c.html (no affiliation with this site, it was just the top hit when I searched). However the device is not a “card” but a large box, coax connectors on one side and LED’s on the other. Working condition is not known; I have not plugged it in, but if you wish I’m willing to do that and report results before shipping. I have a thin-net port on my NeXT computer, so I could maybe even get the LED’s to flash, FWIW, although I’m not sure there is a terminator in the box so that might not work. I’m in San Antonio, TX zip 78254. I’ll use the box it is already in, and ship via your favorite carrier; check or MO are preferred payment, or we can likely work out paypal, etc. - Mark 210-522-6025 office 210-379-4635 cell