From time to time, at its expense, promptly execute and deliver all further instruments and documents, and take all further action that the Buyer or any of its assignees under the Transaction Documents may reasonably request in order to perfect, protect or more fully evidence the purchases, sales and assignments and security interests hereunder, or to enable the Buyer or any such assignee to exercise or enforce any of their respective rights with respect to the Devices and the Related Customer Leases. Without limiting the generality of the foregoing, each Lessee will upon the request of the Buyer or any of its assignees under the Transaction Documents authorize and file such financing or continuation statements, or amendments thereto or assignments thereof, and such other instruments or notices, as may be necessary or appropriate.