Cisco Bdl PIX 501 chassis 10u +SW Li 3DES. Data transfer rate (max): 100 Mbit/s. Data link protocols: TCP/IP,IPX/SPX,PPPoE,NetBIOS, Management protocols: SNMP. Security algorithms supported: switching, 56-bit, 168-bit encryption, auto-sensing per device. Processor clock speed: 133 MHz. Minimum RAM: 16 MB, Minimum flash memory: 8 MB, Minimum processor: AMD SC520 x86-to-RISC