Thank You
For info Below is the response given by ATI
(The specifications are the same. The HD 2000 series cards runs on PCIE 1.1. You will need to confirm this with www.apple.com since the cards are specifically flashed by Apple. These cards may contain different video bios versions.)

Power Mac G5 Dual, early Macbook, early Mac pro, Mac OS X (10.5.2), Software Hassleblad's Phocus
ATI Radeon™ HD 4000/ATI Mobility Radeon™ HD 4000, ATI Radeon™ HD 3000/ATI Mobility Radeon™ HD 3000, and ATI Radeon™ HD 2000/ATI Mobility Radeon™ HD 2000 Series Graphics reached peak performance optimization in October, 2013. No additional driver releases are planned for these products. AMD 2 nd Gen Ryzen System Config: AMD Ryzen 7 2700X, ‘Turpan’ reference motherboard, 16GB of dual-channel DDR3-3200, GeForce GTX 1080 Ti Graphics Card, Graphics driver 390.77, and a Samsung 850 PRO 512GB SSD using the Windows 10 RS3 operating system. AMD Ryzen System Config: AMD Ryzen 7 1700X, 1700, Ryzen 5 1600X, Ryzen 5 1600 X370 Xpower. Rounding out the family are the ATI Radeon™ HD 2600 and ATI Radeon™ HD 2400 series, bringing feature-rich DirectX 10 gaming and smooth multimedia playback to customers looking for entry-level and mid-range graphics options. The ATI Radeon HD 2600 and ATI Radeon HD 2400 cards is scheduled to ship in late June with pricing to be announced.
Mac Pro Ati Radeon Hd 2600 Xt

Ati Radeon Hd 2600 Drivers For Macbook Pro
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