uvscom —
USB support for SUNTAC Slipper U VS-10U serial adapters
  driver
uvscom* at uhub?
ucom* at uvscom?
The uvscom driver provides support for the SUNTAC
  Slipper U VS-10U chip. Slipper U is a PC Card to USB converter for data
  communication card adapters. It supports DDI Pocket's Air H" C@rd, C@rd
  H" 64, NTT's P-in, P-in m@ster, and various other data communication card
  adapters.
The device is accessed through the
    ucom(4) driver which makes it
    behave like a tty(4).
The uvscom driver first appeared in
  FreeBSD and later in NetBSD
  1.6.