User manual
0x02  Front Panel RJ45 
0x03  Front panel mini-USB (default)
0x04 RTM mini-USB 
0x05 RTM RJ45 
0x0F Automatic mode 
Table 2: COM1 UART MUX settings 
COM2 MUX: 
Setting  Connection 
0x00  no interface connected, open 
0x01 Serial-over-LAN (SOL) 
0x02  Front Panel RJ45 
0x03  Front panel mini-USB (default)
0x04 RTM mini-USB 
0x05 RTM RJ45 
Table 3: COM2 UART MUX settings 
Important Note:
 The COM1 UART is the main interface with higher priority! There is 
an important dependency between COM1 and COM2 UARTs, users should know and 
aware of: 
The COM2 MUX can ONLY be used, if the COM1 MUX is set to SOL (0x01)! If the 
COM1 MUX has any other settings than SOL, COM2 is permanently fixed to SOL and 
the COM2 MUX OEM command setting is ignored. 
Read COM port UART MUX setting: 
Response: 
Change COM port UART MUX setting: 
Response: 
39 28 00 
ipmitool raw 0x2e 0x40 0x39 0x28 0x00 0x08 <port> <setting> 
39 28 00 <setting> 
ipmitool raw 0x2e 0x41 0x39 0x28 0x00 0x08 <port> 










