AMD ATI Radeon HD4550 512MB GDDR3 Dual Head PCIe x16 Low-Profile Desktop Graphics Video Card 7120036200G 584081-001 584217-001.ATI Model Number: Radeon HD4550ATI Part Number: 7120036200GHP Part Number: 584081-001HP Spare Part Number: 584217-001Specifications:Bus Interface Type: PCI-Express 2.0 x16Memory: 512MB GDDR3Output:- 1x DMS-59- 1x S-videoAPI Supported:- DirectX 10.1- OpenGL 2.0