I'm hoping to add USB 3.0 to the server blade that I picked up for personal use. However, it has no peripheral connectors (3.5" HDD power connector), only a motherboard connector (used), and some proprietary connectors (used), and several PCIe connectors (unused).
I know I can use the PCIe 12V and ground for the peripheral connector, but how can I power the 5V line?
I've thought of a couple ways that might work.
- I could splice second wire into the motherboard Molex connector.
- I could install a 12V to 5V DC-DC converter powered by one of the PCie power cables.
Are these dangerous or harmful to the machine? Are there other options?
- Dell Precision r5500 workstation (specs here)
- 1100W Power Supply
- PSU can supply 5V 32A (not all used by mobo and HDD's right?)