One of the things I've always found fantastic about Be Quiet!'s power supplies is an excellent selection of cables and connectors with their units - the Pure Power L8 500W is no different. It has just what you need with a little bit of a twist. There are two PCI-E connectors with one on each cable. Peripheral connectors are spread out over three cables, one with all SATA, one with all Molex, and one with SATA, Molex, and an FDD connector.
The Pure Power L8 500W power supply features dual 12V rails. The first 12V rail supplies power to the motherboard, one of the PCI-E cables and all peripherals. The second 12V rail feeds the other PCI-E cable and the auxiliary power for the motherboard. Unfortunately, these aren't clearly labeled and the only way you can tell is by looking at the yellow wires. 12V2 has yellow 12V wires with a blue stripe to differentiate them.
A Look Inside
Inside, we find a tiny PCB with minimal components and cooling. Even though it will only hinder the cooling capabilities of the power supply a tiny bit, I find it odd that they've placed a sticker on top of one of the heat sinks.
A single Teapo bulk capacitor sits on the primary side of the power supply.
The secondary side is littered with more Teapo caps.
Be Quiet!'s Silent Wings T12025-MS-16 fan provides the active cooling for this power supply.