Your request for an RMA must include the component part and serial numbers. Issue the CLI show chassis hardware command to list the numbers for all components installed in the chassis:
user@host> show chassis hardware
Hardware inventory: Item Version Part number Serial number Description Chassis 61322 M10 Midplane REV 03 710-001950 HK3744 Power Supply A Rev 03 740-002498 LL31699 DC Display REV 04 710-001995 HK9437 Routing Engine REV 01 740-007603 P11075100172 RE-3.0 FEB REV 07 710-003310 HH9725 E-FEB FPC 0 PIC 1 REV 04 750-003163 HJ6423 1x G/E, 1000 BASE-SX PIC 2 REV 02 750-003163 HF8954 1x G/E, 1000 BASE-SX PIC 3 REV 04 750-003163 HJ6426 1x G/E, 1000 BASE-SX FPC 1 PIC 3 REV 01 750-008425 BE2069 Adaptive Services
Most components also have a small rectangular serial number ID label (see Figure 48) attached to the component body.
Figure 48: Serial Number ID Label

The following sections describe the tag location on each type of component: