WD 250GB My Passport Wireless SSD External Portable Drive - One-touch SD Card Backup, AC Wi-Fi, USB 3.0, Mobile Access & 4K Streaming - Newegg.com
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Mac Pro 2,1 2X 3GHz Quad Core Xeon, 16 GB RAM, 250GB SD, Nvidia Quadro FX 4800 | eBay
Purchase microSDXC Memory Cards | ProGrade Digital
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 :
SanDisk 256GB Ultra microSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD,