- NPN transistor (almost any NPN transistor: 2n2222 or similar).
@ -114,8 +114,8 @@ Pi-KVM supports several different hardware configurations, which called **platfo
**Addition**
* If you want to capture VGA, buy the [VGA-to-HDMI converter](https://aliexpress.ru/item/4000553298530.html).
**PS: Don't use random relay modules or random optocouplers!** Some relays or optocouplers may not be sensitive enough for the Raspberry Pi, some others may be low-level controlled. Either use relays that are controlled by a high level, or follow the scheme and buy an OMRON. See details [here](https://github.com/pikvm/pikvm/issues/13).
* You can power your Pi-KVM using PoE, but we do not recommend using the official PoE HAT: it is unreliable and [not compatible with the HDMI bridge](https://github.com/pikvm/pikvm/issues/6). Use any other one without I2C fan controller.
***Don't use random relay modules or random optocouplers!** Some relays or optocouplers may not be sensitive enough for the Raspberry Pi, some others may be low-level controlled. Either use relays that are controlled by a high level, or follow the scheme and buy an OMRON. See details [here](https://github.com/pikvm/pikvm/issues/13).