The Extreme Networks 10953 power supply is a 350 W AC PSU with front-to-back airflow. It is compatible with the following switch models:

X465 Series: Specifically, the X465-24S, X465-24XE, and X465-48T models that have matching front-to-back airflow. 

X460-G2 Series: PoE switch models with front-to-back airflow. 

X450-G2 Series: PoE switch models with front-to-back airflow. 

VSP 4900 Series: Models with front-to-back airflow. 

5520 Series: Models with front-to-back airflow.

All items are sold as used, tested & refurbished. If the product is available as ‘New’, a ‘Choose Options’ dropdown box will allow you to amend the product condition.