Genuine HP NVIDIA Quadro 4000 PCIe 2GB GDDR5 Video Card 671137-001 608533-003 - Notebookparts.com
High quality Quadro 4000 Q4000 2G DDR5 cards with DVI DP connector CUDA OpenCL for mac pro 2008 2012 sent by DHL/EMS|Computer Cables & Connectors| - AliExpress
Used PNY Nvidia Quadro 4000 2GB GDDR5 PCI Express x16 Desktop Video Card - Walmart.com
Refurbished: nVidia Quadro 4000 2GB GDDR5 PCI-E x16 2.0 Graphics Video Card With DVI and DisplayPort Outputs 38XNM Standard Height Workstation Video Card - Newegg.com
NVIDIA Quadro 4000 2GB GDDR5 256-bit PCI Express 2.0 x16 Full Height Video Card (Renewed)