The psile case is based on a mini-itx motherboard formfactor. These motherboards are 17x17cm (6.7x6.7 inch) and are available from a range of manufactures and with a variety of CPU types. The features and functionality of your psile case is for the greater part dependent on your choice of motherboard. So take good care selecting your motherboard.
The motherboard you use in your psile case must be a mini-itx formfactor motherboard. On the suggested motherboards list you will find a list of manufacturers and model numbers of compatible boards.
Motherboards equiped with a mini-pci slot can make use of a mini-pci wi-fi card to enable a wireless internet/network connection. This mini-pci card should be used in combination with a wi-fi antenne which is usually supplied with the card. Mini-pci tv tuner cards are also available on the market.