Mikrotik CRS305-1G-4S+IN Switch

Your Price: $124.80
Retail Price:$149.00
You Save:$24.20(16%)
Five-port desktop switch with one Gigabit Ethernet port and four SFP+ 10Gbps ports
Part Number: CRS305-1G-4S+IN
Availability: In Stock.

The CRS305 is a compact yet very powerful switch, featuring four SFP+ ports, for up to 10 Gbit per port. The device has a 1 Gbit copper ethernet port for management access and two DC jacks for power redundancy. The device is a very sleek and compact metallic case without any fans, for silent operation.

The device has a “Dual boot” feature that allows you to choose between two operating systems - RouterOS or SwOS. If you prefer to have a simplified operating system with only switch specific features, use SwOS. If you would like the ability to use routing and other Layer 3 features in your CRS, use RouterOS. You can select the desired operating system from RouterOS, from SwOS or from the RouterBOOT loader settings. All the feature set comes with a disruptive price, providing the best price/performance on the market.

Product codeCRS305-1G-4S+IN
ArchitectureARM 32bit
CPU core count1
CPU nominal frequency800 MHz
Dimensions141 x 115 x 28 mm
License level5
Operating SystemRouterOS / SwitchOS
Size of RAM512 MB
Storage size16 MB
Storage typeFLASH
Tested ambient temperature-40°C to 70°C
Suggested price$149.00


PoE in802.3af/at
PoE in input Voltage12-57 V
Number of DC inputs3 (PoE-IN, DC jack)
DC jack input Voltage12-57 V
Max power consumption18 W
Max power consumption without attachments10 W


10/100/1000 Ethernet ports1


SFP+ ports4


CPU temperature monitorYes

Switching results

ModeConfiguration1518 byte512 byte64 byte
SwitchingNon blocking Layer 2 throughput3,332.240,466.89,633.539,458.661,011.931,238.1
SwitchingNon blocking Layer 2 capacity3,332.280,933.79,633.578,917.361,011.962,476.2
SwitchingNon blocking Layer 1 throughput3,332.241,000.09,633.541,000.061,011.941,000.0
SwitchingNon blocking Layer 1 capacity3,332.282,000.09,633.582,000.061,011.982,000.0

Ethernet test results

CRS305-1G-4S+IN98DX3236 all port test
ModeConfiguration1518 byte512 byte64 byte
Bridgingnone (fast path)104,31266.6273,51120.3449229.9
Bridging25 bridge filter rules1041263.0104,6428.4104,553.5
Routingnone (fast path)104,31266.6273,91121.9343,5175.9
Routing25 simple queues104,31266.6136,9560.7137,470.3
Routing25 ip filter rules64,8786.965,9269.965,833.7
  1. All tests are done with Xena Networks specialized test equipment (XenaBay),and done according to RFC2544 (Xena2544)
  2. Max throughput is determined with 30+ second attempts with 0,1% packet loss tolerance in 64, 512, 1518 byte packet sizes
  3. Test results show device maximum performance, and are reached using mentioned hardware and software configuration, different configurations most likely will result in lower results

Included parts

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