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About nalc

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    InsanelyMac Protégé
  1. G5 to ATX Front I/O Cables

    Followed the instructions. Power button is working fine, using firewire ground. The LED didn't seem to be working at all. I wired the positive correctly, and the negative to the USB ground, but I didn't get any results. Should the LED ground go to the firewire ground or the USB ground? The video doesn't say. I had thought I recalled reading that they were the different grounds, but I'm not sure. One thing I noticed with my test mobo was that another power LED I had was working fine, then I plugged in the apple one and it didn't work, then I plugged in the original one that had been working, and it no longer worked. Guess I'm glad I tested it on an old mobo, rather than on the new one I want to buy. USB pinouts are correct (every pin on the mobo header matches up to the corresponding pin on the USB connector), and devices plugged in get power, but aren't detected by windows. This is with an old mobo and a crappy flash drive, so I can't be sure that the header itself is even working. Was wondering if anyone had any advice. I'm mostly just thrilled to have the power switch working, as that was my main priority. I don't use the USB much, and I can generally figure out whether or not my computer is on without the LED. This site has already been incredibly helpful with the pinout diagram.
  2. G5 to ATX Front I/O Cables

    Thanks. I spent like an hour last night reading this section, and thought I heard it somewhere, but I forgot where. So power button ground = firewire ground, and power LED ground = USB ground?
  3. G5 to ATX Front I/O Cables

    I have a question for the cables. Everywhere there's a pinout, it only shows the positive for the power LED and power switch, no grounds. Then they say that only the positive is needed, as they share a ground with the USB and firewire connectors, so if those are plugged in properly, it will complete the circuit through those grounds, thus only needing the positive for the LED and power switch. This seems straightforward, but I've hit something of a roadblock. I'm wiring mine up to be USB/switch/LED only, as I have no use for front panel firewire or front panel analog audio. I've got the USB wired up properly, and the positives wired up for the switch and LED, but where on the 18-pin connector should I put the grounds for the switch and LED? I'm seeing firewire ground, firewire shield ground, usb ground, and usb shield ground. I remember reading that the switch goes to one and the LED to the other, but I don't remember which was which, and I don't remember whether I want the shield ground or the normal ground. If anyone could give me a quick pointer, it'd be greatly appreciated. Apologies in advance if this is the wrong thread.
  4. Introduce Yourself

    "nalc" is my internet name. From Philly. Registered here because there was a ton of into on PowerMac G5 cases, and you need to register to see attachments. In the process of fitting an ATX mobo with an i5 and a HD 5850 into a PowerMac G5 case. Learned a lot along the way, and would be happy to share some of my triumphs and mistakes on the build. Right now I'm looking for the front panel pinout so I can wire up the power switch and front USB port.