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Unlocked Huawei E3531 E3531s-2 3g Usb Modem 21.6 Mbps Hspa+mobile Broadband 3g Modem Dongle 3g Stick Pke303, E353, - Mobile Wi-fi - AliExpress
![Giving the Raspberry Pi a Serial Modem Using the HUAWEI E3531 USB Dongle (+ Send SMS) : 6 Steps - Instructables Giving the Raspberry Pi a Serial Modem Using the HUAWEI E3531 USB Dongle (+ Send SMS) : 6 Steps - Instructables](https://content.instructables.com/FWM/0WGY/J98R6E7U/FWM0WGYJ98R6E7U.png?auto=webp&frame=1&crop=3:2&width=320&md=155c70e95503a30d34c8a4fdc0c96281)
Giving the Raspberry Pi a Serial Modem Using the HUAWEI E3531 USB Dongle (+ Send SMS) : 6 Steps - Instructables
GitHub - alvinmurimi/Huawei-E3531-Modem-mode-switch: Python script for switching a Huawei E3531 USB modem into modem mode
![Giving the Raspberry Pi a Serial Modem Using the HUAWEI E3531 USB Dongle (+ Send SMS) : 6 Steps - Instructables Giving the Raspberry Pi a Serial Modem Using the HUAWEI E3531 USB Dongle (+ Send SMS) : 6 Steps - Instructables](https://content.instructables.com/F8O/XHR7/J98R6E68/F8OXHR7J98R6E68.png?auto=webp&frame=1&crop=3:2&width=320&md=a1ad669a2c9f213b020f173fb9b6d235)