Single Switches 2960, 3560, 2960X, 3750X, 3850 and others. ISR G2 Routers: 1900 & 2900 Series ISR-G2 Routers w/ latest IOS 15.7 (1921, 1941 and 2911) ISR-G1 & ISR-G2 Call Manager and CUBE ISR-G1 Voice Routers (2811, 2821, etc.) with CME 8.6 & CUBE ISR-G2 Voice Routers (2911, 2921, etc.) with CME 12.0 & CUBE Terminal Servers: 2600 or 2800 Routers 2600, 2800 Routers with NM-16 Modules (Async SCSI Ports) with one or more Octal Cables