Hi all. I'm toying with the idea of making up a custom PCB to split a 5-wire SATA power input into a pair of 5-wire SATA power outputs and a trio of 2-pin 12V outputs for short runs of LED strips. It'll save a lot of space, a whole mess of wiring and look pretty damn fine to boot But my experience extends as far as a couple of etched copper boards at school over 20 years ago, so I'm looking for advice, guidance, points, etc. Start at the very beginning, assume I know nothing (because I don't). All I know right now (I think) is the following: PCB will be tucked away in the 7mm or so gap I have underneath the motherboard and a hard drive mounting plate (the PCB will be attached to that plate), so there will be zero airflow. Based on 1oz copper, I'm think I'll need 2mm wide traces to safely send about 2-3A through the PCB in those cramped conditions. Although I'm using a Samsung SSD and Seagate SHDD (1 amp each tops), one of the LED strips might pull a good 2 amps on its own. So where do we start? What do we do? Looking forward to hearing from you all. Cheers!