Add wiring illustrations for V4

docs/v4.md

@@ -81,23 +81,19 @@ Let's connect all the wires before you power up the device.
 
 ### Network
 
-![MISSING ETHERNET IMAGE](ethernet-connection.jpg)
+![Ethernet wiring](v4-ethernet-wiring.svg)
 
 Connect **Ethernet** (**bottom right** on the **front** side) to the network using the cable from the kit. The kit includes two Ethernet cables of different colors: one for the network, the second for ATX. Use whichever one you like best.
 
-### HDMI
+### HDMI and USB-C
 
-![MISSING HDMI IMAGE](hdmi-connection.jpg)
+![HDMI and USB-C wiring](v4-hdmi-usb-wiring.svg)
 
-**HDMI input** (the **bottom right** on the **back** side) and **OTG** port (USB emulation) should be connected to the computer. Optionally, the **[ATX port](atx_board.md)** can be connected to control the power. There should be no USB hub between PiKVM and the computer, as some UEFI/BIOS cannot detect them at the boot stage.
-
-### USB-C
-
-TBD
+**HDMI input** (the **bottom right** on the **rear** side) and **OTG** port (USB emulation) should be connected to the computer. Optionally, the **[ATX port](atx_board.md)** can be connected to control the power. There should be no USB hub between PiKVM and the computer, as some UEFI/BIOS cannot detect them at the boot stage.
 
 ## Power up
 
-![MISSING POWER IMAGE](power-up.jpg)
+![Power supply wiring](v4-power-supply-wiring.svg)
 
 V4 Mini and V4 Plus have different power supplies: