diff --git a/xCAT-client/pods/man1/rmhwconn.1.pod b/xCAT-client/pods/man1/rmhwconn.1.pod
index 6cc664d04..27b4a213c 100644
--- a/xCAT-client/pods/man1/rmhwconn.1.pod
+++ b/xCAT-client/pods/man1/rmhwconn.1.pod
@@ -8,14 +8,26 @@ B<rmhwconn> [B<-h>| B<--help>]
 
 B<rmhwconn> [B<-v>| B<--version>]
 
+=head2 PPC (with HMC) specific:
+
 B<rmhwconn> [B<-V>| B<--verbose>] noderange
 
+=head2 PPC (without HMC, using FSPAPI) specific:
+
+B<rmhwconn> noderange B<-T tooltype>
+
 =head1 DESCRIPTION
 
+For PPC (with HMC) specific:
+
 This command is used to disconnect FSP and BPA nodes from HMC nodes, according to the connection information defined in ppc talbe in xCAT DB. 
 
 Note: If a CEC (FSP node represents) belongs to a frame with a BPA installed, this CEC cannot be disconnected individually. Instead, the whole frame (BPA node represents) should be disconnected.
 
+For PPC (without HMC, using FSPAPI) specific:
+
+It's used to disconnection FSP and BPA nodes from hardware server.
+
 =head1 OPTIONS
 
 =over 5
@@ -28,6 +40,10 @@ Display usage message.
 
 Verbose output.
 
+=item B<-T>
+
+The tooltype is used to communicate to the FSP/BPA. The value could be lpar or fnm. The tooltype value lpar is for xCAT and fnm is for CNM.
+
 =back
 
 
@@ -53,6 +69,12 @@ To remove the connection for BPA node frame1:
 
  rmhwconn frame1
 
+=item 3.
+
+To disconnect all FSP nodes in node group fsp from their related hardware serveri, using lpar tooltype:
+ 
+ rmhwconn fsp -T lpar
+
 =back