ExpressCard | Apple Wiki
Yes, if your laptop has a PCI Express slot, you can upgrade components like graphics cards or SSDs to improve performance, depending on compatibility and space.
Cổng đồ họa tăng tốc - Wikipedia
An "AGP Express" slot is basically a PCI slot (with twice the electrical power) with an AGP connector. It offers backward compatibility with AGP cards, but ...
Put Graphics card with PCI Express 2.0 into PCI Express x1 slot ...
64-bit PCI-X card partially inserted in 32-bit PCI slot, showing compatibility.