PowerConnection 6248 time/clock problem?

Hi all,

I find the setting from Dell™ PowerConnect™ 6200 Series Series System User’s Guide-->Configuring SNTP Settings.

I have no idea to update the clock.

I config ntp client setting in PowerConnection 6428 to Windows server 2008 r2.

My config:

Dell6248#show switch

Management Standby Preconfig Plugged-in Switch Code
SW Status Status Model ID Model ID Status Version
--- ---------- --------- ------------- ------------- ------------- -----------
1 Mgmt Sw PCT6248 PCT6248 OK 3.3.5.5

Dell6248#show clock
14:29:37 HKT(UTC+8:00) May 14 2005
No time source

Dell6248#show sntp configuration
Polling interval: 64 seconds
MD5 Authentication keys:
Authentication is not required for synchronization.
Trusted keys:
No trusted keys.
Unicast clients: Disable

Unicast servers:
Server Key Polling Priority
--------- ----------- ----------- ----------
a.b.c.d Disabled Enabled 1

Dell6248#show sntp status
Client Mode: Disabled
Last Update Time: JAN 01 00:00:00 1970

Unicast servers:
Server Status Last response
--------------- ---------------------- --------------------------
10.61.208.20 Other 00:00:00 Jan 1 1970

Is it correct configuration?