How to find serial number of server in rhel/centos

[root@vellore Desktop]# dmidecode | egrep -i "serial|product"

                      Serial services are supported (int 14h)
        Product Name: ProLiant ML350 G5
        Serial Number: SGH839XC4Y     
        Serial Number: SGH839XC4Y     
        String 1: Product ID: 412645-B21