Question Customer reported X11DPL-I LAN1 and 2 both not shown in Device Manager, nor IPMI WebGUI.  Customer did clear CMOS, BMC factory default reset but the issue not fixed. Answer Single board issue. After debugged, found out the two MAC address of onboard LAN ports are erased.  Customer needed to RMA the M/B to reprogram the MAC address back. Was this FAQ helpful? YES      NO Enter Comments Below: Note: Your comments/feedback should be limited to this FAQ only. For technical support, please send an email to support@supermicro.com.  Enter your email address below if you'd like technical support staff to reply:  Please type the Captcha (no space) 7 G Q B FAQ Stats FAQ ID Related Category / Keyword Date Posted Code 29810 Networking: - NIC (on-board / add-on) 02/08/19     Print Answer