From your post I will assume you have the
Aqua Computer D5 pump motor with USB and aquabus interface
If so, you can use the 3 pin aquabus cablle included with the pump. The aquabus connectors on the D5 & aquaero are 4 pin, but only 3 pins are used.
use the aquabus plug on the D5 and the aquabus high on the aquaero
[attach]5250[/attach]
[attach]5251[/attach]
EDIT: did you get a satisfactory resolution to your reservoir top and clamp needs?
You're right I have exactly this the D5 pump.
I was afraid that I bought the wrong cable. In addition, I bought a 90 cm 3 pin.
Confusing is the 4 pin plug and 3 pin cable added.
This manual should be about the information that they act only 3 wires in the Aquabus
Thanks!