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2 Ports on the router however you can add more cards to the device. In a 2821 you can add 4 cards such as WICs and in a 2811 you can add 2 cards.
It depends on how many ports are on the hub. Some might have 4 ports, some might have 8 ports some might have 16 ports etc...
PCI cards
ports
You will still be able to use the on-board VGA but your new graphics card (depending on which one) will be better so you can use the ports on the graphics cards instead.
Broke. There are interface connectors/ports, fan ports, and slots, for add on cards. All motherboard ports. If there is a hole with out some kind of port,it is not for anything.
A zero-slot LAN is a local-area network (LAN) that uses existing serial and/or parallel communication ports on the computers in the network instead of requiring network interface cards (NICs) that would occupy an expansion slot. Advantages It leads to transmitting between computers over a serial or parallel port, thus freeing up an expansion slot normally used by LAN cards (NICs). Disadvantages Zero-slot LANs are typically slower than LANS that use NICs and are limited to two or three network nodes.
Video
if you mean those that are perpendicular-they're the ones that stick out the back of a desk top usually. however, most of your hardware is internal, like pci cards, sound cards, etc... all must connecdt to the mother board through ports
more ports (i.e. pci) compatibility with better graphics cards (PCIe instead of AGP), compatibility with better processors (LA775 instead of Socket 472, or AMD quivalent), better built in features such as sound, faster data pipelines for increased performance.
no, usually there are only two ports for sound.
it has more bandwith in other can get more performant expansions for say raid cards or more commonly graphic cards