Every expansion slot PCIe made irrelevant, ranked by what made them special

If you open a PC case from the late '90s, you'll find a motherboard that looks chaotic. You may see a single AGP slot for the graphics card, a row of slots for ordinary expansion, and there may be a comically long legacy ISA slot—a remnant from the 486 era. All of these were important. They solved real problems that don't exist in quite the same way today.

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