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MikroTik CRS305-1G-4S+in — Review & Specs | Pricepect | Pricepect

Home Network HubsMikroTik CRS305-1G-4S+in

MikroTik CRS305-1G-4S+in — image 1

MikroTik

MikroTik CRS305-1G-4S+in

$150.54

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CRS305-1G-4S+INwhite

Network Hubs Network Switches

Expert Review Analysis

The MikroTik CRS305-1G-4S+IN is a compact, fanless 10 Gbps SFP+ switch with a single Gigabit Ethernet port, offering high‑speed fiber aggregation, dual‑boot RouterOS/SwitchOS, and low power consumption for space‑constrained, silent deployments.

✓ Best for: Fiber‑optic network aggregation in data centers or campus environments, silent and compact deployments such as offices, broadcast studios, or server rooms, power‑constrained sites needing low‑wattage equipment, and redundant networks that benefit from dual DC inputs and PoE‑IN.✗ Not ideal for: Scenarios requiring high‑performance routing, advanced firewall or filtering, copper 10 Gbps Ethernet connections, or environments that demand extensive CPU resources for complex L3 services.

Pros

✓Fanless passive cooling provides silent operation, eliminating noise in office or studio environments.
✓Compact 141×115×28 mm form factor fits easily into space‑constrained installations.
✓

Price History

Current

$150.54

Average

$140.28

Lowest

$125.00

Highest

$225.00

Price trend (90d):+8.3%

Best Seller Rank History

Now#112Best#48Worst#920 +363

Lower = better sales rank

Specifications

Design

Height28 mm mm

Width141 mm mm

Depth115 mm mm

Weight453.6 g g

Cooling TypePassive (fanless)

Features

Dual BootSupports RouterOS or SwitchOS

Silent OperationFanless design eliminates noise

Compact Size141 × 115 × 28 mm form factor

Flexible Fiber ConnectivitySupports 10, 5, 2.5, 1.25, and 1 Gbps SFP+ modules

Low Power Consumption12-18 W depending on attachments

General

BrandMikroTik

ManufacturerMikrotik

Model NameCRS305-1G-4S+IN

ColorWhite

Release Date2018-10-08

Performance

CPU Model98DX3236A1

CPU Clock Speed800 MHz MHz

CPU ArchitectureARM

RAM512 MB MB

Storage16 MB Flash MB

Ports

SFP+ Ports4 (10 Gbps each)

Gigabit Ethernet Ports1 (10/100/1000 Mbps)

Power

DC Inputs3 (two DC jacks + PoE-IN)

DC Input Voltage12-57 V

PoE InputIEEE 802.3af/at, 12-57 V passive

Maximum Power Consumption12 W (without attachments), 18 W (with attachments)

PoE SupportYes (PoE+)

Software

Operating SystemRouterOS / SwitchOS

RouterOS License Level5

Reliability

MTBFApproximately 200,000 hours at 25 °C

Processor

CPU ArchitectureARM

Licensing

RouterOS License LevelLevel 5

Dimensions & Weight

Height1.10236 inches

Width5.55117 inches

Depth4.52755 inches

Weight1.0 pounds

Research Sources

balticnetworks.com

ispsupplies.com

help.mikrotik.com

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User Reviews

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4.6

(1,117 reviews)

Four 10 Gbps SFP+ ports plus a 1 Gbps Ethernet port enable high‑speed fiber aggregation.

✓Dual DC power inputs with PoE‑IN offer power redundancy and flexible power sourcing.

✓Low power consumption of 12‑18 W reduces operational costs for always‑on deployments.

✓Hardware‑offloaded switching delivers non‑blocking 41 Gbps layer‑1 throughput.

✓Dual‑boot capability allows operation as RouterOS or SwitchOS for flexible L2/L3 use.

Cons

✗Routing performance is limited by the 800 MHz CPU, delivering only 0.78 Gbps with standard routing.
✗Only fiber‑optic SFP+ modules are supported; copper 10 Gbps transceivers are not compatible.
✗Modest 512 MB RAM and single‑core CPU restrict advanced routing, filtering, and feature sets.
✗Full switching performance depends on correct hardware offloading configuration; misconfiguration reduces throughput.
✗No built‑in fan means limited heat dissipation in extremely high‑temperature environments beyond rated range.

From Expert Reviews

Praised by Experts

✓Exceptional 41 Gbps non‑blocking switching throughput makes it ideal for high‑speed layer‑2 aggregation.
✓Passive fanless design ensures silent operation, valuable for noise‑sensitive settings.
✓Dual power inputs with PoE‑IN provide redundancy and flexible power options for critical networks.
✓Compact size and low 12‑18 W power draw enable deployment in space‑constrained, power‑limited environments.
✓Dual‑boot RouterOS/SwitchOS offers versatile functionality beyond a pure layer‑2 switch.

Criticized by Experts

✗CPU‑dependent routing performance is significantly lower than switching, limiting its use as a router.
✗Lack of support for copper 10 Gbps transceivers restricts connectivity options to fiber only.
✗Modest processing resources (800 MHz CPU, 512 MB RAM) limit advanced routing and filtering capabilities.
✗Performance relies on proper hardware offloading; otherwise throughput can drop sharply.
✗No fan may be a concern in environments exceeding the -40 °C to +70 °C operating temperature range.

Expert Opinion

Professional reviewers praise the CRS305-1G-4S+IN for its silent, compact design and impressive hardware‑offloaded switching performance, while noting that its modest CPU and lack of copper 10 Gbps support make it unsuitable as a primary router. The dual‑boot capability adds flexibility, but routing throughput remains a secondary strength.

Common Complaints

Routing throughput is low due to CPU limitations, making the device unsuitable for heavy routing workloads.. Incompatibility with copper 10 Gbps transceivers forces reliance on fiber optics.. Limited RAM and single‑core CPU restrict advanced features and complex filtering.. Performance can degrade if hardware offloading is not correctly configured.. Absence of a fan may raise concerns in very high ambient temperature conditions.

How It Compares

Compared to larger managed switches, the CRS305 offers a unique blend of fanless silent operation, ultra‑low power draw, and four 10 Gbps SFP+ ports in a sub‑20 W package. While unmanaged fiber switches may be cheaper, they lack the dual‑boot RouterOS/SwitchOS flexibility and redundancy features. Higher‑end switches provide superior routing performance and more ports but consume significantly more power and generate noise due to active cooling.

Rating Trend

Rating4.6/ 5Reviews1,117+153 reviews -0.11

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