Picked this daughterboard up, to use it with my MacCon IIsi/SE30 ethernet card, in the hope I could skip the use of a transceiver since my currently installed daughterboard only has thick and thin connections.
Sweet! Thank you @Bolle ! And nice feature regarding the detachable AUI port! I will put it to good use the day I figure out how to fit my Rasterops card on top of the TwinSpark/Daystar/MacCon configuration.