Ubiquiti UNIFI USG & switch with ASUS ac68u rack

My USG cannot load full speed if I use PPPOE, but good speed if use IPv6 (DHCP from ISP).
I need PPPOE to get a public IP address from my ISP, that's why I have to add a router in front of it.
Also I set one Raspberry pi as UNIFI controller, another one runs home assistant, so put them on the top.

This small rack for：

• 1 X UNIFI USG
• 1 X UNIFI 8 port switch
• 2 X Raspberry pi 3B+/4B
• 1 X ASUS AC68U/AC1900

What you need:

• You have to change your AC1900/AC68U router case which grated by bubbax: [Asus RT-AC68U Alternative Case] (https://www.thingiverse.com/thing:2870339)
• 8 X magnets 8mmx3mm

Video: https://youtu.be/oPL6XjQqQJU

Print instructions

Perimeter: 5 or more
Top & bottom layer: 0
Infill: 25% Grid