umcs —
USB multiport serial adapters driver
umcs* at uhub?
ucom* at umcs?
The umcs driver supports a wide variety of hardware
based on the MosChip 7810, 7820, 7840 chipsets and clones thereof. Devices
range from single port to eight port (implemented as a USB hub and two
umcs four port instances behind it).
Examples of hardware known to work with this driver are:
The umcs driver attaches the MosChip multiport chipset
with individual port drivers via
ucom(4), which makes it behave
like a tty(4).
The umcs driver appeared in NetBSD
7.