Ruijie#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
Ruijie(config)#int hundredGigabitEthernet 0/54:1
Ruijie(config-if-HundredGigabitEthernet 0/54:1)#port speed-mode ?
  10G  Force 10Gbps operation
  25G  Force 25Gbps operation

Ruijie(config-if-HundredGigabitEthernet 0/54:1)#port speed-mode 10G 
Warning: Ports Hu0/54:1 - Hu0/54:4 will be set speed mode 10G. Continue? [Y/N]:Y