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T640 Chassis Description


The T640 Core Router chassis is a rigid sheet metal structure that houses all the other router components (see Figure 1 and Figure 2). The chassis measures 37.45 in. (95.1 cm) high, 31 in. (78.7 cm) deep, and 17.43 in. (44.3 cm) wide. For physical specifications, see T640 Physical Specifications. The chassis can be installed into many types of racks or cabinets. For more information. see T640 Rack Requirements.

The chassis includes the following features (see Figure 1 and Figure 2):

  • One pair of metal flanges for front-mounting or mounting in a four-post rack or cabinet.

  • One pair of metal brackets for center-mounting.

  • Installation handles on each side to facilitate positioning the router in the rack. Do not use the handles to lift the router.

  • Two electrostatic discharge (ESD) points (banana plug receptacles), one front and one rear.


    Before removing or installing components of a router, attach an ESD strap to an ESD point and place the other end of the strap around your bare wrist. Failure to use an ESD strap could result in damage to the router.


    The router must be connected to earth ground during normal operation.

    Figure 1: Front View of T640 Chassis
    Front View of T640 Chassis
    Figure 2: Rear View of T640 Chassis
    Rear View of T640 Chassis

For chassis serial number information , see Locating T640 Component Serial Numbers Using the CLI.