What are the dimensions and weight of the SRX300 device?

The dimensions of the SRX300 are 12.63 x 1.37 x 7.52 inches and it weighs 4.38 lb (1.98 kg).

What is the maximum firewall throughput of the SRX300 firewall?

The SRX300 firewall supports up to 1.9 Gbps firewall throughput.

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HPE Juniper Networking SRX300 Firewall w/ Junos Software Base (firewall, NAT, IPSec, routing, MPLS, and switching), RMK not included | SRX300-SYS-JB

Securing small branch or retail offices, the SRX300 firewall consolidates security, routing, switching, and WAN connectivity in a small desktop device. The SRX300 supports up to 1.9 Gbps firewall and 336 Mbps IPSec VPN in a single, cost-effective networking and security platform.