UBSA(4FREEBSD) - Linux man page online | Special files

USB support for Belkin serial adapters.

April 26, 2017
UBSA(4) BSD Kernel Interfaces Manual UBSA(4)


ubsa — USB support for Belkin serial adapters


To compile this driver into the kernel, place the following lines in your kernel configura‐ tion file: device usb device ucom device ubsa Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): ubsa_load="YES"


The ubsa driver provides support for the USB-to-RS232 Bridge chip used by a variety of serial adapters from Belkin and other vendors. The device is accessed through the ucom(4) driver which makes it behave like a tty(4).


The ubsa driver supports the following adapters: · AnyData ADU-500A EV-DO modem · AnyData ADU-E100A (no EV-DO mode support) · Belkin F5U103 · Belkin F5U120 · e-Tek Labs Kwik232 · GoHubs GoCOM232 · Peracom single port serial adapter


/dev/ttyU* for callin ports /dev/ttyU*.init /dev/ttyU*.lock corresponding callin initial-state and lock-state devices /dev/cuaU* for callout ports /dev/cuaU*.init /dev/cuaU*.lock corresponding callout initial-state and lock-state devices


tty(4), ucom(4), usb(4)


The ubsa driver appeared in FreeBSD 5.0. The uplcom(4) manual page was adopted from NetBSD by Tom Rhodes <> in April 2002 and modified for the ubsa driver by Alexander Kabaev <> in October 2002.


The ubsa driver was written by Alexander Kabaev <>.
BSD April 26, 2017 BSD
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ubsa(4freebsd) referred by ucom(4freebsd) | umct(4freebsd)
refer to tty(4) | ucom(4freebsd) | uplcom(4freebsd) | usb(4freebsd)
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