AMD Radeon R9-280X OC 3Gb PCI-Express Graphics Video Card

*Modified Graphics Video Card For Mac w/Apple Boot Screen    Condition : Slightly Used with 60 days warranty Compatible Mac Pro Model :  MacPro3,1 - 5,1 from 2008 to 2012 EFI64 *MacPro1,1/2,1 with OS X Mavericks 10.9 or higher OS X installed Compatible OS X :  Lion 10.7.5 or Higher macOS Catalina 10.15.x , Big Sur 11.0.x to Sonoma 14.x & Sequoia 15.x Compatible , * METAL Supported !! Bootcamp Supported ( windows 10 / 8.x / 7 / Vista / XP 32/64-bit )  Connector Port : 1x Dual-Link DVI Port , 2x MiniDisplay Port & HDMI Port ( 4 Display Simultaneously ) *HDMI / MiniDisplay Port - 4K Support @30/60Hz (10.9.2+ needed, may not show Apple Boot Screen, Proper adapter may need)   **Build By AMD/MSI , Factory OverClocked Model w/Twin Forza V Cooling Fan System, Silent & Cool  *True EFI Firmware modified, Fully compatible & Apple Boot Screen available