I have a bunch of servers connected through an 8-port Omniswitch, but i’m plagued with the typical mouse issues that occur with these switches (after switching inputs, the mouse feed will often get corrupted). The only sure-fire way to solve this is to unplug the mouse and then plug it back in. Needless to say, this gets to be a real PITA after a while.
I decided to wire a switch into the mouse cord to enable me to quickly cycle power to the mouse. One half-assed attempt later, and I find myself on the Dope to solve a few problems.
The first problem is isolating the power leads. This page identifies ground as pin 3 and power as pin 4. Unfortunately, the two mouses I’ve disected have the leads at the end of the connector coated in solid plastic, making it impossible to identify which wires are leading to pins 3 and 4. Two of the wires in the first mouse I cracked open were red and black, so I assumed those were the power leads. I wired these into a switch I had lying around, but it didn’t work. The second mouse I opened up had completely differently-colored wires, so I’m not sure that the wires in the first mouse were power leads at all. The circuit board on the second mouse had a + next to one of the leads, so I’m assuming that’s power.
To be absolutely sure, I plan to chop the mouse cord in half, plug it in, and use a multimeter to test leads until I find the right ones. I fear, however, that I may short out the PS2 connecter on the mobo and damage it. That being said, is there any safe way to determine which lead is which?
The second issue is the switch itself. The page cited above states that input is +5VDC and max 500mAmps. The switch I have is rated for 125VDC at .5A. I assumed that was just the maximum rating, and wouldn’t have any impact on the project, but now I’m not so sure. Do I need a switch that’s rated closer to what it’ll be operating at? If so, where can I get one online?
Your gracious insight is appreciated.