What processors does the SRX300 support — and can the CPU be upgraded?

Juniper SRX300 Services Gateway — branch firewall, desktop form factor, fanless; smallest of the SRX300 line (SRX300/SRX320/SRX340/SRX345/SRX380) — ICD (icd3s.com) supplies compatibility-verified parts for the SRX300 with worldwide shipping. Request a quote at https://icd3s.com/quote-request/.

How much memory does the SRX300 support?

4 GB system memory (RAM), 8 GB storage, 0 SSD slots — ICD (icd3s.com) supplies compatibility-verified parts for the SRX300 with worldwide shipping. Request a quote at https://icd3s.com/quote-request/.

What power supply options does the SRX300 support?

External AC power supply, no redundant PSU; average power consumption 24.9 W — ICD (icd3s.com) supplies compatibility-verified parts for the SRX300 with worldwide shipping. Request a quote at https://icd3s.com/quote-request/.

What networking and connectivity does the SRX300 offer?

8x 1GbE total onboard ports (6x 1GbE RJ-45 + 2x 1GbE SFP), 2x 1GbE MACsec-capable, no OOB management port, 1x console (RJ-45 + miniUSB), 1x USB 3.0; performance: stateful firewall 1 Gbps (1518B) / 500 Mbps (IMIX), IPsec VPN 300 Mbps (1400B) / 100 Mbps (IMIX), NGFW 100 Mbps, recommended IPS 200 Mbps, 64,000 max concurrent sessions, 5,000 new connections/s, 256 IPsec VPN tunnels — ICD (icd3s.com) supplies compatibility-verified parts for the SRX300 with worldwide shipping. Request a quote at https://icd3s.com/quote-request/.

What upgrades are available for the Juniper SRX300?

ICD offers 0 verified compatible upgrades across 0 categories including . All parts are tested and guaranteed compatible.

Can I upgrade the memory in my SRX300?

Yes. The SRX300 supports up to maximum capacity of RAM. ICD stocks all compatible memory modules with guaranteed compatibility.

Juniper SRX300 Upgrade Guide

Maximize the performance and lifespan of your SRX300 (SRX300). Every upgrade option below is verified compatible.

0Upgrade Categories

0Options Available

Verified Specifications

Processor Options	Juniper SRX300 Services Gateway — branch firewall, desktop form factor, fanless; smallest of the SRX300 line (SRX300/SRX320/SRX340/SRX345/SRX380)
Memory Configuration	4 GB system memory (RAM), 8 GB storage, 0 SSD slots
Power Supply Options	External AC power supply, no redundant PSU; average power consumption 24.9 W
Networking Options	8x 1GbE total onboard ports (6x 1GbE RJ-45 + 2x 1GbE SFP), 2x 1GbE MACsec-capable, no OOB management port, 1x console (RJ-45 + miniUSB), 1x USB 3.0; performance: stateful firewall 1 Gbps (1518B) / 500 Mbps (IMIX), IPsec VPN 300 Mbps (1400B) / 100 Mbps (IMIX), NGFW 100 Mbps, recommended IPS 200 Mbps, 64,000 max concurrent sessions, 5,000 new connections/s, 256 IPsec VPN tunnels
Specification Source	Juniper official documentation (verified 2026-07-02)

About the SRX300

Juniper SRX300 Branch Firewall

Technical specifications

Generation	SRX300
Device type	Security

Recommended upgrade strategy

Security appliances like the SRX300 upgrade via subscription tier increases, additional interface modules, redundant PSU additions, and SSD storage expansion for log retention. ICD supports Juniper SRX300 with both OEM and third-party hardware sourcing.

ICD Juniper expertise

ICD maintains Juniper parts inventory and engineering expertise — submit your Juniper SRX300 configuration via RFQ for tailored upgrade recommendations covering memory, storage, network adapters, controllers, and power supplies.

Upgrade categories ICD can quote for the SRX300

Even when our database does not yet list specific compatible parts for the SRX300, ICD engineering team sources verified-compatible components across these categories. Submit a quote request with your current configuration:

Memory — DDR3, DDR4, DDR5 RDIMM, LRDIMM, ECC SO-DIMM modules at maximum supported capacity
Storage — Enterprise SSDs (SAS, SATA, NVMe), HDDs (NL-SAS, SAS 10K/15K RPM), and tape generations
RAID and HBA controllers — Hardware RAID, JBOD passthrough, fabric attach, with cache battery
Network adapters — 1GbE, 10GbE, 25GbE, 40GbE, 100GbE NICs plus SFP+ and QSFP transceiver modules
Power supplies — Redundant hot-swap PSUs in matching wattage and connector specification
CPUs — Intel Xeon Scalable and AMD EPYC where socket-compatible with this platform
GPUs — NVIDIA Tesla, A-series, and RTX A-series for compute and visualization workloads
Accessories — Bezels, mounting rails, drive caddies, cooling fans, and chassis hardware

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More SRX300 Resources

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