The 50-pin ZIF to IDE adapter linked in my last post does not work. The pin pitch seems a little off, and I don't think the ZIF side actually has all 50 pins (seems more like 40). In any case, the connector is not compatible with the Shuttle G5 front panel connector.
Upon further research and measuring, the Shuttle front panel connector appears to be a flat flexible cable (FFC) with 50 pins and 0.5 mm pitch. I will look for another way to separate the pins with those specs. So far I've found this adapter
which looks promising.
I just ordered this Flat Flexible Cable Breakout Board
which seems to fit the bill nicely. It takes a 0.5mm pitch FFC (up to 60 pins) and separates them into 0.1" spaced male headers, which I'm pretty sure is the same spacing as a standard motherboard header. Assuming it works, I can get some motherboard connector cables and try hooking them up. I'm currently in Taiwan so I will not get it for several weeks.)
Also, I've switched the PSU back to the Shuttle PC40 (instead of the Seasonic SS-250SU). And I swapped the two fans in the Shuttle PC40 with two Scythe Mini Kaze Ultra (40x40x20mm) fans.
The advantage of the Shuttle PC40 is that it uses two fans in push/pull, rather than the single fan in the Seasonic SS-250SU. Both use 40x40x20mm fans, but the specs are very different. The Shuttle PC40 uses two Delta EFB0412MD fans, rated at 0.06 amps, max airflow of 7.17 CFM (specs here (PDF)
). The fan in my Seasonic SS-250SU is made by "SuperRed" (never heard of them, some kind of Communist China reference?) that is labeled 0.18 amps, or 3x the power of the Shuttle PC40 fan!
To be clear, the Seasonic PSU fan doesn't run full speed all the time (or any of the time, as far I've seen), and unmodified, my Seasonic PSU is quieter than my Shuttle PSU. But if you're going to do a fan swap, it's much easier to find a quiet replacement for two 0.06 amp fans than a single 0.18 amp fan. (Note that the Scythe 40mm fan is rated at less than 5 CFM, compared with the 7+ CFM of the stock Shuttle fans.
That said, it's quite possible that the Seasonic PSU does not actually need such a super-powered fan. It's an 80+ PSU and the fan might be over-engineered for server/industrial applications. I might get another 40x40x20mm fan and test this later. I am very interested in the Sunon MagLev Vapo fan (HA40201V4-0000-C99) which claims 5.5 CFM and 12.8 dBA. (By comparison, the Scythe claims 4.86 CFM and 19.56 dBA).
After the Scythe fan swap, I heard some odd sounds that I originally thought was motor whine, but now I think it is vibrations between the fans and the PSU components. It's a very tight fit in there, so I tried simply wrapping the Scythe fans in some thin foam to reduce vibrations. It's quieter now although I can still hear the odd noise from time to time.
Note that these are just minor complaints based on the fact that 1) I was on vacation in a very quiet area of California, 2) I was out of desk space so the computer was sitting literally right below my ear, and 3) I had a lot of time on my hands. In fact the system as a whole is very quiet and I'm quite pleased with the results.
I've also overclocked the Phenom to 3.6 GHz. This required increasing the voltage, but that only kicks in when the CPU is under load. At idle, voltage and temps are the same. I was also able to unlock the fourth core, but the only way to get it stable was to disable Cool N Quiet, which is not worth it for my typical usage.