Had these as extras when I owned NeXT's in the past. Both are ADB model. No way to test anymore since I sild all my NeXT systems. Years and years ago I am sure I plugged them in as quick tests and then stored them away. I am not going through my NeXT stuff and selling it all.
I will sell the two as a set for $25 plus shipping. Figure one is bound to work after all this time so buyer will get both. That being said, they are sold as-is and no warranty. I just can't test them. My guess both worth fine but if one does not, odds are other does.
So, might be worth it at only $25 plus shipping to get them.
Let me know.
TJ
Pictures (they are fairly clean and look nice)
http://tinyurl.com/p4tfmb4http://tinyurl.com/jw7sjpc