librenms-librenms/includes/polling/os/speedtouch.inc.php

<?php

$serial = '';
// list(,$hardware,) = explode(" ", $hardware);
$hardware = $poll_device['sysDescr'];

$features = '';

// Filthy hack to get software version. may not work on anything but 585v7 :)
$loop = shell_exec($config['snmpget'].' -M '.$config['mibdir'].' -Ovq '.snmp_gen_auth($device).' '.$device['hostname'].' ifDescr.101');

if ($loop) {
    preg_match('@([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)@i', $loop, $matches);
    $version = $matches[1];
}