Unless the motherboard was specifically designed to support a riser card, you cannot add additional expansion slots to it.
USB
The price of 8 expansion slots equals the price of 7 expansion slots.
expansion slots are the slots that are located on the mother boards of the computer and at the left side of the south bridge.
On an AT motherboard, the CPU will be placed in front of the expansion slots
The two internal expansion slots in laptops that are commonly used to install wireless adapter cards are the Mini-PCIe and the PCI Express Micro. The Mini-PCIe is for devices that have requirements such as logistics, kiosks, computing, and POS terminals.
ISA
ISA
Computers include expansion slots that allow users to add new devices to their computers. A computer player, for example, may upgrade their video card to improve gaming performance. They can use an expansion slot to swap out the old video card with a new one without having to replace the motherboard. What are the advantages of having expansion slots? A computer's expansion slots can be used to install network cards. If the computer does not already have a Wi-Fi adaptor, a Wi-Fi network card can be installed. Furthermore, as newer, faster Wi-Fi standards are announced, expansion card Wi-Fi adapters can be swapped out for newer, faster cards.
You need a wireless network adapter.USB devices are the easiest to install and they won't take up one of your expansion slots.
BTX
microBTX
BTX