I have the same issue that i need more space for the ams lite.
So i orderd this cable on amazon [J&D 2er Pack ATX 4 Pin CPU Männlich auf Weiblich Verlängerungs Kabel - 20cm] after seeing this in another forum.
They also used this one [Delock Micro Fit 3.0 4 Pin Verlängerungskabel Stecker > Buchse 30 cm] but with amazon it arrieves faster and no costs for the transport.