diff --git a/xCAT-client/pods/man1/rmhwconn.1.pod b/xCAT-client/pods/man1/rmhwconn.1.pod
index d0e2a731b..86ea9a15e 100644
--- a/xCAT-client/pods/man1/rmhwconn.1.pod
+++ b/xCAT-client/pods/man1/rmhwconn.1.pod
@@ -16,6 +16,10 @@ B<rmhwconn> [B<-V>| B<--verbose>] I<noderange>
 
 B<rmhwconn> I<noderange> B<-T> I<tooltype>
 
+=head2 PPC (use HMC as SFP) specific:
+
+B<rmhwconn> B<-s>
+
 =head1 DESCRIPTION
 
 For PPC (with HMC) specific:
@@ -28,6 +32,10 @@ For PPC (without HMC, using FSPAPI) specific:
 
 It's used to disconnection CEC and Frame nodes from hardware server.
 
+For PPC (use HMC as SFP) specific:
+
+It is used to disconnect Frame nodes from HMC nodes.
+
 =head1 OPTIONS
 
 =over 5