Altera PL-APU USB Master Programming Unit (Power supply ratings Help!)

Any thoughts anyone? I would have thought the Altera Techs would know this no?

I took the Circuit board out of the enclosure but there were no voltage markings at all around the DC input port. I'm guessing it might be around 9V DC or possibly 12 but of course I want to confirm this.

Any thoughts at all ?

The PL-APU is essentially the same unit as the PL-ASAP2. The only difference is that it has the USB interface and therefore has no need for the LP6 Logic Programming card. This is the real old school Altera gear from the late 90's and early 2001.

Here are some image Links for you to review. So I'm optimistic that someone out there could let me know what the DC voltage and Amperage requirements are for this Altera PL-APU Master programmer.

I also posted some info and Images here on my website.

I attached a 5Volt DC power supply with a 1amp current rating. I figured chances are it would not be a lower voltage rating than 5 Volts so I took a chance. Well the Adapters programming light was vary Dim so I moved it up to a 6 Volt DC and still it was quite Dim, so I then used a 7.5 Volt DC supply and it seems to be at the regular brightness as the PL-ASAP2 programmer. However the Software is failing to detect the installed adapters.

So I'm wondering if it is a 9V DC or possibly even a 12Volt But I'm not at the point to want to try that yet so I think I'll try and find someone that has the APU programmer and ask them what their Power supply ratings indicate.

I guess I could just continue and use the PL-ASAP2 model but then what would be the point in having this USB model. It would allow me to use it with a Laptop as a portable programmer.

Can you open the programmer and look for a power regulator chip near the power connector?