| USLSA(4) | Device Drivers Manual | USLSA(4) | 
uslsa —
uslsa* at uhub?
ucom* at uslsa?
uslsa driver is known to work with the following
  adapters:
uslsa driver provides support for the Silicon Labs
  USB-to-RS-232 Bridge chip.
The device is accessed through the ucom(4) driver which makes it behave like a tty(4).
Silicon Laboratories AN571: CP210x Virtual COM Port Interface..
uslsa driver appeared in NetBSD
  4.0.
uslsa driver was written by
  Jonathan A. Kollasch. Code and style was borrowed from
  existing NetBSD USB-serial drivers.
| January 27, 2019 | NetBSD 9.4 |