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Forum Discussion
PS121 Print Server PSU plug size
I have found this question asked a number of times before but never for a similar unit as this one. It's a PS121 Print Server, device name on detail sticker PS3A0591. I need a replacement PSU as th...
bordonbert wrote:
I need a replacement PSU as the original one is missing. It has the usual 5.5mm barrel plug but I can't tell if it is a 2.1mm or 2.5mm centre pin. At only 0.5A I'm guessing 2.1mm but that is just what it is, a guess.
There are still manuals for these things in the support library. But they are usually silent on tip dimensions.
In any case, you won't be able to buy a Netgear replacement, so it will have to be a generic adapter. These often come with a set of tips that will fit just about any standard devices. They look a bit like this:
Generic adapter
The manual says 9 V DC 0.5 Amps max.
I had found the manual in Netgear Support so I was aware that they don't give tip dimensions. I can never really understand the reason why, it's a standard piece of device spec after all, unless its simply a "you MUST buy any replacement from us" marketing strategy. I guess the pragmatic way is to try a 2.1mm plug from an incorrect voltage PSU (unplugged of course). That should give a clear demonstration of whether a 2.1mm fits or it requires a 2.5mm. Why didn't that occur to me before?
I do think it is better to get a straight through hard wired tip if that is possible. The multi-tip types always seem to be pretty poor quality builds with a noisy output. You are absolutely right through, they can get you out of a jam. Given a decent supply I can fit the correct sized plug anyway as I do have good soldering kit and skills. It's just nicer to get one moulded on from the get go.
Thanks for your advice Michael, it is appreciated.
