I am new to core switches and I have a Cisco Mutilayer 4507R switch which serves as our main core switch. Right now the (WS-X4548-GB-RJ45) expansion module is almost filled out and I am planning to add 1 more. Can somebody please help me on how to configure additional expansion module. Right now the IOS version is 12.2 and 1 WS-X4515 Supervisor engine IV. I really appreciate whatever tips and help you may offer. Thank you in advance.