This adapter connects the Amiga's standard RGB connector to a 15/31kHz analog-RGB monitor with a 15-pin connector. This adapter is available from Commodore as part #390682-01. 23-Pin Female to 15 Pin Female Analog Diagram A1-A14 are pins 1-14 of a 74HCT08 (dual-input AND gate) IC chip. C1 is a .01uf 50V ceramic capacitor.