Amperes (What is indicated as [...]A ) cant be too much on the Side of a Power supply. It works about like this: Voltage needs to be within the Limits the Camera can Handle, which in the Case of the Chronos Cameras is between 17 and 20 Volts, where 19 and 19,5V are both well within. The Thing about Current in Amperes is, that the Camera basically Takes as much as it needs. As Long as the Power Supply can Provide at least 40Watt of Power. Watt is just Voltage, which is Fixed by the Power supply, in the Case of the one you have 19,5V; multiplied by Current, which in this case will be 2,05A to make 40 Watt. The Power Cable You have is able to provide up to 3 Ampere of current, so based on That it would be able to provide up to 58,5Watt of Power to the Camera, which is probably needed for the Panasonic Cameras it is meant to power.
Imagine a car that can Drive 240kmh, that does not mean you need to drive it that fast, or that it will just drive that speed no matter what at all times. Means just that is the Limit, and it will usually not go much faster than that in most Situation.
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Most important, apart from the Fact, that the Voltage is within the Limits the camera needs, which is the Case here, the Powersupply can Provide more Power than the Camera needs, which is also the Case, AND Polarity!
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For the Polarity, do you have any other Power Supply for the Panasonic Cameras this is originally meant for? I cant find any information regards Polarity on these Cameras anywhere, and from this information i assume you would also not be able to figure out if it is correct on your own.
A Image of the Label on one of the Original Power supplies for the FX6 or FX9 would help a ton to confirm what Polarity that adapter cable ist (no Product page for any of those mentions anything about it also).
