Identify PC Slots
Almost all motherboards built include a variety of slots that can be used to install expansion cards. Knowing which slots you have inside your computer is important to anyone who wants to purchase a new video or sound card. The easiest way to know which expansion slots you have, should you not have the documentation that came with your motherboard, is to physically look. Each card slot is different, and looking for key features is vital to learning which slot is which.
Instructions
1. Examine the motherboard. In small lettering below each slot the name of the above expansion slot will most likely be written. Depending on the motherboard, this may be on top of the slot.
2. Consider the length of each slot. Remember that PCI-E (PCI Express) x1 slots are quite short. AGP slots are the length of 1 1/2 PCI-E x1 slots and marked with three small gashes. PCI slots are slightly longer than AGP slots and are identified by their small gash followed by one longer gash. PCI-E x16 slots are the longest slots on a motherboard.
3. Look online. Sites often have diagrams or other visual aids to show you what each slot looks like.
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