The Mini W is the JetKVM Mini with an ESP32-C5 for Wi-Fi 6 on 2.4 and 5 GHz instead of the Ethernet port. Everything else is the same box, and the steps before flashing are on the Mini's page.
The first version for this device. ESP-KVM on the Mini W is new and has not been through enough testing yet. In theory nothing can break: at worst the image does not start, and you flash it again over USB. Still, a first version is at your own risk, so make the backup from the steps on the Mini's page first: it is the only way back to the stock firmware. Once it has been tested properly, I will say so here, and from then on it can be installed without any worry.
On the first boot ESP-KVM opens its own setup hotspot, and the screen shows a code to join it. The C5 keeps the firmware it ships with. If the Wi-Fi does not come up, tell me.
ESP-KVM is a separate open-source project. It is not made, sold or supported by JetKVM.