ASA5506-RACK-MNT= ASA 5506-X Rackmount Kit Spare
2 GB Memory Upgrade for Cisco ASA 5520 Part Number:ASA5520-MEM-2GB=
ASA 5585-X Front Rack and Rear Rack Kit Part Number:ASA5585-RACK-KIT=
1 GB Memory Upgrade for Cisco ASA 5510 Part Number:ASA5510-MEM-1GB=
ASA 5525-X with SW, 8GE Data, 1GE Mgmt, AC, NPE Part Number:ASA5525-K7
ASA 5525-X with SW, 8GE Data, 1GE Mgmt, AC, DES Part Number:ASA5525-K8