Yes they are... The motherboard is a large, square circuit board, containing lots of sockets. Expansion cards are rectangular circuit boards that slot into the sockets on the motherboard.
expansion slots are the slots that are located on the mother boards of the computer and at the left side of the south bridge.
Expansion features, of course (that is why they are called expansion slots).Boards (sometimes called daughterboards) are plugged into these slots to add the needed hardware for features not originally included in the computer. Additional driver software is usually required to support these boards (some OSs can automatically identify the new boards and load the driver software automatically, others require that the user do this manually).
You plug bits of circuit board into slots to gain extra functionality.
A specification for extending the internal circuitry bus that transmits data from one part of a computer to another by inserting circuit boards. It allows the expansion of a computer by inserting printed circuit boards, or expansion boards, into sockets expansion slots inside the PCI bus. Full form: peripheral component interconnect.
Expansion Boards
expansion slots :D
Pci cards
Pci cards
it is a opening in a mother board where other circuits boards can be inserted to add new capabilities.
You plug bits of circuit board into slots to gain extra functionality.
The price of 8 expansion slots equals the price of 7 expansion slots.