WatchGuard Firebox Upgrade Guide
Maximize the performance and lifespan of your WatchGuard Firebox. Every upgrade option below is verified compatible.
Verified Specifications
| Processor Options | Firebox T series tabletop: T115-W, T125(-W), T145(-W), T185 (Wi-Fi variants); M series rackmount: M290/M390/M395, M590/M595/M690, M5850 |
| Networking Options | T series FW throughput 1.02-3.9 Gbps (UTM 280-710 Mbps); M series M395 20 Gbps FW / M595 43 / M5850 79 Gbps; up to 25G SFP28 ports |
| Specification Source | WatchGuard official documentation (verified 2026-07-02) |
Frequently Asked Questions
Upgrade Networking
Stepping up from 1GbE to 10GbE or 25GbE eliminates network bottlenecks for VM migration, iSCSI storage traffic, and backup windows. Most modern workloads benefit from at least 10GbE.
WG8541 Watchguard 1GBE SFP-SX Transceiver Module (legacy)
WG8542 Watchguard 1GBE SFP-LX Transceiver Module (legacy)
WG8583 10GB SR SFP+ Transceiver
WG8584 1GB Copper RJ-45 SFP
WG8585 1GB Sx SFP Transceiver
WG8586 Watchguard 1000BASE-LX SFP Long Range Transceiver Module 1310NM 10KM
Upgrade Accessories
Rails, bezels, cable management arms, and drive caddies keep your server organized and serviceable. Replacing worn accessories extends the physical life of your equipment.
WG8021 T-grid Ceiling Mount for AP125/AP325/AP420
WG8038 Watchguard Flat Surface/Wall Mount Kit for AP325/AP130
WG8544 Watchguard Rack Mount Kit for Firebox M-series (5/8 Series)
WG8596 Rack Rails for Firebox M-series
WG9023 Rack Mount Kit for Firebox T25/T45
Upgrade Power Supplies
Higher-wattage PSUs provide headroom for future upgrades — more RAM DIMMs, GPUs, or additional drives. Redundant hot-swap PSUs also protect against single-point power failures.
WG8034 Power Adapter for Firebox T70/T80/T85-POE (us)
WG8582 Watchguard Redundant Power Supply with Rack Mount Kit for Firebox M440
WG8600 Watchguard Redundant Power Supply for Firebox M4800/M5800
WG8601 Watchguard FRU Power Supply for Firebox M290/M390/M590/M690
WG9005 Power Adapter for Firebox T35/T40/T55 (us)
WG9012 Hot Swap PSU for Firebox M470/M570/M670
More WatchGuard Firebox Resources
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