On Mice and Keyboards

Author	Message
CircuitGizmos Guru Joined: 08/09/2011 Location: United States Posts: 1427	Posted: 08:01pm 10 Jul 2021         mklausm said   I have the Logitech K120 which is on the list and it does not work with Maximite 2 and Maximite 2 Gen2. It seems that no matter which keyboard (Fujitsu KB 410, Trust, Logitech K120 and others) is connected, they only work for a certain time. It's probably the power supply that's the problem. The ones I've tested don't seem to be powerful enough. What kind of power supply should I use ? So many 5V supplies are not up to the specification written on them. I great number that I have tested that say something like 5V 1000mA don't provide both specs simultaneously. In other words, as I increase the load to draw 300mA, the 5V has dropped to 4.5V. At 500mA a lot of these are under 4V. I suggest the Samsung or Apple wall warts. They maintain 5V well above 500mA. I changed the RetroMax design (2.3a) to use the USB "C" connector.