联系瞻博网络公司申请退回材料授权 （RMA） 之前，您必须找到路由器或组件上的序列号。要显示所有路由器组件及其序列号，请输入以下命令行界面 （CLI） 命令：
user@host> show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis JN10C75C9AFC MX240
Midplane REV 01 710-021041 TR1500 MX240 Backplane
FPM Board REV 01 710-017254 KD4019 Front Panel Display
PEM 0 Rev 02 740-017330 000326 PS 1.2-1.7kW; 100-240V AC in
PEM 1 Rev 02 740-017330 000333 PS 1.2-1.7kW; 100-240V AC in
Routing Engine 0 REV 06 740-013063 1000701796 RE-S-2000
Routing Engine 1
CB 0 REV 07 710-013385 KD1348 MX SCB
CB 1 REV 07 710-013385 JZ0029 MX SCB
FPC 1 REV 01 750-018124 JY9650 DPCE 4x 10GE R
CPU REV 06 710-013713 JZ6625 DPC PMB
PIC 0 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
Xcvr 0 REV 01 740-014279 KBC03VY XFP-10G-LR
PIC 1 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
Xcvr 0 REV 01 740-014279 KB602C5 XFP-10G-LR
PIC 2 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
Xcvr 0 REV 01 740-014279 KB602C3 XFP-10G-LR
PIC 3 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
FPC 2 REV 01 750-018124 JY9642 DPCE 4x 10GE R
CPU REV 06 710-013713 JY9337 DPC PMB
PIC 0 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
Xcvr 0 REV 01 740-014279 KB602BQ XFP-10G-LR
PIC 1 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
Xcvr 0 REV 01 740-014279 KB602BG XFP-10G-LR
PIC 2 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
Xcvr 0 REV 01 740-014279 KBC03W1 XFP-10G-LR
PIC 3 BUILTIN BUILTIN 1x 10GE(LAN/WAN)
Fan Tray 0 REV 01 710-021113 JS4641 MX240 Fan Tray
大多数组件在组件主体上还有一个小的矩形序列号 ID 标签（见 图 1）。
图 1：序列号 ID 标签