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Amazon.com: Teyleten Robot SIM800C USB GSM GPRS Wireless Module Quad-Band, 850/900/1800/1900MHz, CH340T USB Chip Support 2G 3G 4G SIM Card USB Communication SMS Data Transmission with Antenna (SIM800C is New) : Electronics
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Amazon.com: EXVIST 4G LTE Industrial Mini PCIe to USB Adapter Industrial Dongle W/SIM Card Slot Compatible W/WWAN/LTE 3G/4G Mini PCIe Module Like Quectel EC25-AF EG25-G etc. for Quick Network Connection : Electronics
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M2 USB Adapter NGFF(M.2) Key B to USB 3.0 Adapter with SIM 6Pin Slot for WWAN/LTE Module - Walmart.com
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Amazon.com: EXVIST 4G LTE Industrial Mini PCIe to USB (Type-C 3.1) Adapter W/SIM Card Slot for WWAN/LTE 3G/4G Module Suitable for M2M & IoT Applications Like Raspberry Pi Industrial Router IP Camera :
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