SanDisk Ultra 3D 2.5" 250GB SATA III 3D NAND Internal Solid State Drive (SSD) SDSSDH3-250G-G25 - Newegg.com
SanDisk SSD USB 3.1 Type C 250GB 500GB 1TB 2TB External Solid State Disk 500M/S external hard drive for Laptop tablet nas server|External Solid State Drives| - AliExpress
Best Buy: SanDisk Extreme Portable SSD 250GB External USB-C Portable Solid State Drive SDSSDE60-250G-G25