The JetKVM Mini is a small ready-made KVM. Inside is the ESP32-P4X, the chip ESP-KVM runs on, with the same 32 MB of PSRAM. The box, the HDMI input and the USB port are already there, so it is a natural device for ESP-KVM as custom firmware.
There is no ESP-KVM image for it yet. This page will say when there is one.
Mini and Mini W
The two differ in the network. The Mini has 100M Ethernet. The Mini W has an ESP32-C5 for Wi-Fi 6 on 2.4 and 5 GHz in its place. ESP-KVM already runs Wi-Fi through a second chip on the Function EV Board, and the C5 version of that board has an image too.
How ESP-KVM and the JetKVM Mini compare today is on the comparison page.
ESP-KVM is a separate open-source project. It is not made, sold or supported by JetKVM.