switch# config terminal
Enter configuration commands, one per line. End with CNTL/Z.
switch(config)# interface breakout module 1 port 53 map ?
  10g-4x  Breaks out a 40G  high BW front panel port into four 10G ports
  25g-4x  Breaks out a 100G  high BW front panel port into four 25G ports
  50g-2x  Breaks out a 100G high BW front panel port into two 50G ports

switch(config)# interface breakout module 1 port 53 map 10g-4x
switch(config)#