Most components have a small rectangular serial number ID label (see Figure 1) attached to the component body.
Figure 1: Serial Number ID Label

The chassis serial number is located on the side of the chassis (see Figure 2).
Figure 2: TX Matrix Chassis Serial Number Label

The serial number is located on the top of the TX-CB (see Figure 3).
Figure 3: TX-CB Serial Number Label

The serial number label is located at the top of the left side of the TX-CIP (see Figure 4).
Figure 4: TX-CIP Serial Number Label

The serial number is located on the back of the craft interface panel, behind the alarm LEDs (see Figure 5).
Figure 5: Craft Interface Serial Number Label

The serial number label is located on the left side of the power supply faceplate (see Figure 6).
Figure 6: Power Supply Serial Number Label

The serial number label is located on the left side of the top of the Routing Engine (see Figure 7).
Figure 7: Routing Engine Serial Number Label

The serial number label is located on the top of the right side of the TX-SIB in the TX Matrix router (see Figure 8).
Figure 8: TX-SIB Serial Number Label

For the LCC-SIB in the T640 router connected to a TX Matrix router, the serial number label is located on the left side of the SIB (see Figure 9).
Figure 9: Line-Card Chassis SIB Serial Number Label
