diff --git a/includes/discovery/temperatures/powerconnect.inc.php b/includes/discovery/temperatures/powerconnect.inc.php
index 18df1f5e7b..1a48dcd37b 100644
--- a/includes/discovery/temperatures/powerconnect.inc.php
+++ b/includes/discovery/temperatures/powerconnect.inc.php
@@ -2,23 +2,38 @@
 
 if ($device['os'] == "powerconnect")
 {
-  $temps = snmp_walk($device, "boxServicesTempSensorTemperature", "-OsqnU", "FASTPATH-BOXSERVICES-PRIVATE-MIB");
-  if ($debug) { echo($temps."\n"); }
+    $sysObjectId = snmp_get ($device, "SNMPv2-MIB::sysObjectID.0", "-Ovqn");
+    switch ($sysObjectId) {
+        case ".1.3.6.1.4.1.674.10895.3031":
+        /**
+        * Devices supported:
+        * Dell Powerconnect 55xx
+        * Operating Temperature: 0º C to 40º C
+        */
+        $temperature = trim(snmp_get($device, ".1.3.6.1.4.1.89.53.15.1.9.1", "-Ovq"));
+        discover_sensor($valid['sensor'], 'temperature', $device , ".1.3.6.1.4.1.89.53.15.1.9.1", 0 , "powerconnect" , "Internal Temperature" , '1', '1', "0" , NULL, NULL, "40", $temperature);
+        break;
+        default :
+        /**
+        * Defaul Discovery for powerconnect series
+        *  Dell-Vendor-MIB::dellLanExtension.6132.1.1.1.1.4.4.0 = STRING: "5 Sec (6.99%),    1 Min (6.72%),   5 Min (9.06%)"
+        */
+        $temps = snmp_walk($device, "boxServicesTempSensorTemperature", "-OsqnU", "FASTPATH-BOXSERVICES-PRIVATE-MIB");
+        if ($debug) { echo($temps."\n"); }
 
-  $index = 0;
-  foreach (explode("\n",$temps) as $oids)
-  {
-    echo("Powerconnect ");
-    list($oid,$current) = explode(' ',$oids);
-    $divisor = "1";
-    $multiplier = "1";
-    $type = "powerconnect";
-    $index++;
-    $descr = "Internal Temperature";
-    if (count(explode("\n",$temps)) > 1) { $descr .= " $index"; }
+        $index = 0;
+        foreach (explode("\n",$temps) as $oids)
+        {
+            echo("Powerconnect ");
+            list($oid,$current) = explode(' ',$oids);
+            $divisor = "1";
+            $multiplier = "1";
+            $type = "powerconnect";
+            $index++;
+            $descr = "Internal Temperature";
+            if (count(explode("\n",$temps)) > 1) { $descr .= " $index"; }
 
-    discover_sensor($valid['sensor'], 'temperature', $device, $oid, $index, $type, $descr, $divisor, $multiplier, NULL, NULL, NULL, NULL, $current);
-  }
+            discover_sensor($valid['sensor'], 'temperature', $device, $oid, $index, $type, $descr, $divisor, $multiplier, NULL, NULL, NULL, NULL, $current);
+        }
+    }
 }
-
-?>