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UFTDI(4) Device Drivers Manual UFTDI(4)

uftdi
FTDI USB serial adapter

uftdi* at uhub?
ucom* at uftdi?

The uftdi driver provides support for various serial adapters based on the FTDI FT8U100AX, FT8U232AM, FT8U245AM, FT232B/H/R, FT245B/R, FT2232C/D/H/L, FT4232H and FT-X series chips.
The device is accessed through the ucom(4) driver which makes it behave like a tty(4).

intro(4), tty(4), ucom(4), uhub(4), usb(4)

The uftdi driver appeared in NetBSD 1.5. OpenBSD support was added in OpenBSD 2.9.
January 12, 2014 OpenBSD-5.6