The front of the Lian-Li PC-O5s has lots of mesh, for their “open air” design. One of the configurations is with the bottom stand, so it stands upright.
There are two (2) USB 3.0 ports, microphone and headphone ports, and a power button in a little recessed panel.
The back of the case has four (4) PCIe slots that are parallel to the motherboard, so you will need a riser card (included). There is also room for a single 120mm or 140mm fan on the side panel behind the motherboard tray. There are also two (2) cut outs for running a power cable.
The top of the case has perforations over room to mount two (2) 120mm fans.
The vertical stand has rubber pads on the feet to reduce vibrations, and to protect your desk.
The business side has a tempered glass panel that covers the entire side. It is held in place by four (4) large thumb screws.