I just bought an nVidia GeForce GTX 550 Ti, which requires a 6 pin power connector, which my PSU doesn't have. However, it came with a 6-to-4 pin adapter. But when I connected the 4 pin connectors, this happened:
The red wire (5 V) from the adapter's connector is connected on the black wire (0 V) on the PSU's connector. Is this right?