pikvm/pikvm#1435: Fixed ethernet cable info link

docs/atx_board.md

@@ -44,7 +44,10 @@ To manage the power of your computer, you will need to install an ATX adapter bo
     ??? example
         <img src="atx_board_10.jpg" />
 
-7. Connect the ATX board to PiKVM using a [straight Ethernet cable with 8 wires](https://www.home-network-help.com/straight.html).
+7. Connect the ATX board to PiKVM using a straight Ethernet cable with 8 wires.
+
+    ??? example
+        <img src="straight.png" />
 
 
 ## Pinout

docs/v3.md

@@ -11,7 +11,7 @@
     * MicroSD card (at least 16Gb, class 10 recommended).
     * USB-C to USB-A cable.
     * HDMI cable.
-    * [Straight Ethernet cable](https://www.home-network-help.com/straight.html) (for the ATX board connection).
+    * <a target="_blank" href="../atx_board/straight.png">Straight Ethernet cable.</a>
     * Power supply unit (5.1V 3A USB-C, recommended by the Raspberry Pi).
 
 !!! tip "Before assembling"