Lexar 256GB Professional 1667x UHS-II SDXC LSD1667256G-B2NNU B&H
Amazon.com: Video Pro SD Card UHS-II 256GB SDXC Memory Card 4-Pack U3 V90 A1, Extreme Performance Professional Sd-Card (R 280mb/s 250mb/s W) for Advanced DSLR,Well-Suited for Video, Including 4K,8K, 3D, Full HD :
ProGrade Digital 256GB UHS-II SDXC Memory Card PGSD256GBKBH B&H
Rocket V90 SD UHS-II Memory Card - Sabrent
Mac Pro 2,1 2X 3GHz Quad Core Xeon, 16 GB RAM, 250GB SD, Nvidia Quadro FX 4800 | eBay
New Micro SD SDXC Card U3 V30 250GB 512GB 1024GB Class 10 Memory 4K UHD | eBay