官網有寫
Catalyst Display Driver 7.9 and higher
Radeon™ HD2600 AGP series
Radeon™ HD2400 AGP series
Radeon™ X1950 AGP series
Radeon™ X1900 AGP series
Radeon™ X1800 AGP series
Radeon™ X1650 AGP series
Radeon™ X1600 AGP series
Radeon™ X1550 AGP series
Radeon™ X1300 AGP series
Radeon™ X1050 AGP series
Radeon™ X850 AGP series
Radeon™ X800 AGP series
Radeon™ X700 AGP series
Radeon™ X600 AGP series
Radeon™ X550 AGP series
Radeon™ X300 AGP series
Radeon™ 9800 AGP series
Radeon™ 9700 AGP series
Radeon™ 9600 AGP series
Radeon™ 9550 AGP series
Radeon™ 9500 AGP series
Windows Vista 32-bit Edition
Windows Vista 64-bit Edition
Windows XP Professional
Windows XP Home Edition
Windows XP Media Center Edition
Windows XP Professional x64 Edition

所以說9550 AGP當然也適用