MEM-S2-256MB256mb Memory for Cisco 6000/6500 Series Supervisor Engine 2, 2U

MEM-S2-512MB512mb Memory for Cisco 6000/6500 Series Supervisor Engine 2U, 720

MEM-C6K-FLC16M16mb Flash Memory for Cisco 6000/6500 Series Supervisor Engine 1, 1A, 2, 2U

MEM-C6K-FLC24M24mb Flash Memory for Cisco 6000/6500 Series Supervisor Engine 1, 1A, 2, 2U

MEM-C6K-ATA-1-64M64mb Flash Memory for Cisco 6000/6500 Series Supervisor Engine 2 & 2U