The Cisco C9500‑ACCKITH‑23I= is a 23‑inch rack mount accessory kit designed specifically for Cisco Catalyst 9500 Series switches, particularly the high‑end models. This kit provides the necessary mounting brackets and hardware to securely install a Catalyst 9500 switch into a 23″ rack frame, which is wider than the more common 19″ standard, making it suitable for installations that require this rack size or specific depth alignment. By using this accessory, network technicians can ensure the switch is properly supported, neatly positioned, and firmly fixed in data center or enterprise network racks.