# RICHCOMM_USB(8)

## NAME

richcomm_usb - Driver UPS equipment using Richcomm dry-contact to USB solution

## SYNOPSIS

richcomm_usb -h

richcomm_usb -a UPS_NAME [OPTIONS]

Note | This man page only documents the specific features of the richcomm_usb driver. For information about the core driver, see nutupsdrv(8).

## SUPPORTED HARDWARE

The Richcomm dry-contact to USB solution is a generic interface that is used to upgrade an existing (RS-232) contact closure UPS interface to USB. As such, all the limitations of the underlying contact closure interface apply. This means that you will only get the essentials in `ups.status`: `OL`, `OB`, and `LB`. See also genericups(8).

## BUGS

Most contact-closure UPSes will not power down the load if the line power is present. This can create a race when using secondary upsmon(8) systems. See the upsmon(8) man page for more information.

The solution to both of these problems is to upgrade to a smart protocol UPS of some kind that allows detection and proper load cycling on command.

## AUTHORS

- Peter van Valderen <p.v.valderen at probu.nl>

- Dirk Teurlings <dirk at upexia.nl>

## SEE ALSO

### The core driver:

nutupsdrv(8)

### The generic serial driver:

genericups(8)

### Internet resources:

The NUT (Network UPS Tools) home page: https://www.networkupstools.org/historic/v2.8.4/