a two-port SATA card that gives you RAID capability
(Peripheral Component Interconnect) A standard bus specification initially developed by Intel that bypasses the standard ISA I/O bus and uses the system bus to increase the bus clock speed and take full advantage of the CPU's data path. You can connect a PCI card to the motherboard for sound card, network card, graphics card and internal modems
PCI cards can be added to desktops to give them increased functionality. Extra USB ports, ethernet, and modems all are PCI cards. Most desktops have 4-6 PCI card slots.
(Peripheral Component Interconnect) - A hardware accessory that slots into a PC.
A client adapter card radio module that can be inserted into any device equipped with an empty PCI expansion slot.