StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter Card Model PEX1TO162 - Newegg.com
Introduction to PCI Express: the AGP8X Replacement - PCSTATS.com
More Albatron ATOP info | TechPowerUp
Desktop PCI AGP PCI-E Slot Tester - $4.50 : Sintech Eshop!, The World of PC Adapter Card
Video Adapter Interfaces - iFixit
Oscar Barea on Twitter: "3Dfx Project AGP to PCIe - Perhaps 3Dfx fans can be interested but I am really busy and lazy. It is AGP2PCIe adapter. Design is ended since summer
Difference Between PCI Express and AGP | Differbetween