H3C万兆光模块为什么序列号是一样的？在线等大侠指点

H3C万兆光模块为什么序列号是一样的，如下：

[NWHJ-S7503X]display transceiver manuinfo interface M-GigabitEthernet1/0/0/0 transceiver manufacture information: The operation is not supported. Ten-GigabitEthernet1/0/0/17 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/18 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/19 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/20 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/21 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/22 transceiver manufacture information: The transceiver does not support this function. Ten-GigabitEthernet1/0/0/23 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/0/0/24 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/0/0/25 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/26 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/27 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/0/0/28 transceiver manufacture information: Manu. Serial Number : 210231A0A6N146000001 Manufacturing Date : 2014-06-01 Vendor Name : H3C Ten-GigabitEthernet1/1/0/17 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/1/0/18 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/1/0/19 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/1/0/20 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/1/0/21 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/1/0/22 transceiver manufacture information: The transceiver is absent. Ten-GigabitEthernet1/1/0/23 transceiver manufacture information: