MikroTik FiberBox Plus 4×SFP+ 10G IP66 Outdoor Switch

The MikroTik FiberBox Plus is the budget outdoor 10G fiber switch in the MikroTik lineup — the correct choice when 4× SFP+ ports and IP66 weatherproofing are the requirements, and the five additional 1G SFP ports of the netFiber 9 are not needed. At USD 229.00 versus the netFiber 9's USD 249.00, the USD 20 difference buys exactly that: no 1G SFP ports, otherwise identical switching silicon and outdoor protection.

**The 98DX226S — identical to the netFiber 9**

The Marvell 98DX226S integrated CPU + switch ASIC is the same chip documented for the netFiber 9 in this product batch — dual-core ARM32 at 800 MHz, hardware-offloaded Layer 2 switching across all ports at line rate, hardware ACL, L3 hardware routing offload for inter-VLAN flows, and jumbo frame support. MikroTik's own description confirms it directly: "it even features the same impressive Marvell 98DX226S switch-chip, so the performance is definitely there." The FiberBox Plus delivers identical switching performance to the netFiber 9 — the only hardware difference is the absence of the five 1G SFP ports.

**4× SFP+ ports — 10G with backward compatibility**

All four SFP+ ports accept 10G SFP+ transceivers and DAC cables (10GBASE-SR, 10GBASE-LR, 10G DAC) at full 10G speed, and are backward compatible with 1G SFP transceivers for legacy fiber infrastructure. For a tower site connecting 4 downstream 10G-capable devices — sector AP aggregation switches, outdoor routers with SFP+ ports, or inter-building fiber links — the FiberBox Plus covers the deployment completely. Where more than 4 fiber connections are required, or where a mix of 1G and 10G SFP connections is needed, the netFiber 9 is the correct upgrade path.

**IP66 + passive cooling + 7W idle — the outdoor efficiency argument**

IP66 complete dust protection and powerful water jet resistance from any direction. Passive cooling — no fans, no moving parts, no maintenance, no fan failure risk. 7W max power consumption without attachments is the lowest idle power draw of any outdoor fiber switch in MikroTik's current catalogue — relevant for solar or battery-backed remote installations where power budget is constrained. The 3-source power architecture (DC jack, PoE-in, 2-pin terminal) covers every outdoor power delivery scenario: tower DC bus via 2-pin terminal, PoE from an 802.3af/at switch via GbE, or AC adapter via DC jack.

**FiberBox Plus vs netFiber 9 — the decision**

- **FiberBox Plus (USD 229):** 4× SFP+ only, IP66, 7W idle. Correct when 4 fiber connections are sufficient and lowest cost and power draw matter.

- **netFiber 9 (USD 249):** 5× SFP (1G) + 4× SFP+ (10G) + 1× GbE, IP54, 10W idle. Correct when 1G SFP access ports are needed alongside 10G SFP+ uplinks.

**5-year software support guarantee:** RouterOS v7 and SwitchOS updates free for life of product or minimum 5 years from date of purchase.

**Canadian market note:** CE, EAC, RoHS only — no FCC, no IC published. Wired switch, no wireless transmitter — no ISED wireless advisory applies. Confirm CSA/cUL electrical safety requirements with distributor before listing.

Key specifications:

- **Product code:** CRS305-1G-4S+OUT

- **CPU / Switch ASIC:** Marvell 98DX226S, dual-core ARM32, 800 MHz

- **RAM / Storage:** 256 MB / 16 MB FLASH

- **OS:** RouterOS v7 License 5 / SwitchOS

- **SFP+ ports:** 4× (10G, backward compatible 1G)

- **GbE ports:** 1× (management + PoE-in)

- **Serial console:** RJ45

- **DC inputs:** 3 (DC jack 24–57V + PoE-in 42–57V 802.3af/at + 2-pin terminal 24–57V)

- **Max power:** 17W (7W without attachments)

- **Cooling:** Passive

- **IP rating:** IP66

- **Operating temp:** -40°C to +70°C

- **MTBF:** ~200,000 hours at 25°C

- **Certifications:** CE, EAC, RoHS — no FCC, no IC

- **Included:** 48V 0.95A adapter, Gigabit PoE injector, K-41 fastening set, K-72 fastening set, hose clamp ×2

- **Suggested price:** USD 229.00