Paar wrote on 2020-06-05, 05:47:

If I remember correctly there is this one difference between 40 wires IDE cable and 80 wires cable. With 40 wires cable you have to connect master device to the end of the cable and slave device to the middle connector, with 80 wires cable you have to connect it to the middle connector of the cable and slave device to the end connector. Or was it just recommendation?

40 vs 80 wire cables hsve no such distinction . You can use either connector for master or slave .

You are probably thinking of Cable-Select cables .

Yeah, it's very well possible this applies only to cable select mode...