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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: KOOTION 64GB Metal Key Design USB Flash Drive, Metal Key Shaped Memory Stick, USB 2.0 Sliver : Electronics
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