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nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy [MDBT50Q-RX] : ID 5199 : $15.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Amazon.com: Fettoca 5pcs 8GB Metal USB Key,USB 2.0 USB Flash Drive Memory Stick (purple) : Electronics
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