ACX5448, ACX5448-D, and ACX5448-M Installation Overview
You can mount ACX5400 routers:
Flush with the front of a 19-in. four-post rack. Use the standard mounting brackets provided with the router for this configuration.
Recessed 2 in. (5 cm) from the front of a 19-in. four-post rack. Use the extension bracket provided in the standard mounting kit for this configuration. Recessed mounting is primarily used in enclosed cabinets.
To install and connect an ACX5400 router: