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UMB(4) FreeBSD Kernel Interfaces Manual UMB(4) NAME umb - USB Mobile Broadband Interface Model (MBIM) SYNOPSIS umb* at uhub? DESCRIPTION The umb driver provides support for USB MBIM devices. MBIM devices establish connections via cellular networks such as GPRS, UMTS, and LTE. They appear as a regular point-to-point network interface, transporting raw IP frames. Once a connection is established, the device will automatically set an IP address and send out a nameserver proposal, which resolvd(8) can act on. Required configuration parameters like PIN and APN have to be set with ifconfig(8). Once the SIM card has been unlocked with the correct PIN, it will remain in this state until the MBIM device is power-cycled. In case the device is connected to an "always-on" USB port, it may be possible to connect to a provider without entering the PIN again even if the system was rebooted. HARDWARE The following devices should work: Dell DW5821e Ericsson H5321gw and N5321gw Fibocom L831-EAU Medion Mobile S4222 (MediaTek OEM) Quectel EC25 Quectel EM060K Quectel RM500Q SIMCom SIM7600 SIMCom SIM8262E-M2 Sierra Wireless EM7345 Sierra Wireless EM7455 Sierra Wireless EM8805 Sierra Wireless MC8305 EXAMPLES The following hostname.if(5) example configures umb0 to set the APN to "internet", enabling data roaming, and obtaining an IP address using IPv6 stateless address autoconfiguration: pin 1234 apn internet inet6 autoconf roaming SEE ALSO intro(4), netintro(4), usb(4), hostname.if(5), ifconfig(8), route(8) Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model, https://www.usb.org/document-library/mobile-broadband-interface-model-v10-errata-1-and-adopters-agreement. CAVEATS Devices which fail to provide a conforming MBIM implementation will probably be attached as some other driver, such as umsm(4). FreeBSD 14.1-RELEASE-p8 May 23, 2024 FreeBSD 14.1-RELEASE-p8