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The CRS305-1G-4S+IN is a five-port desktop switch with one Gigabit Ethernet port and four SFP+ 10Gbps ports, designed for silent operation and high-speed connectivity, featuring dual-boot capability with RouterOS or SwOS.


US$149.00 Tax excluded

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The CRS305-1G-4S+IN is a versatile desktop switch that combines powerful performance with a compact design. Featuring one Gigabit Ethernet port and four SFP+ ports, this device supports speeds of up to 10 Gbit per port. With its sleek metallic casing and fanless design, it ensures noise-free operation.

The CRS305 is equipped with a "Dual boot" feature allowing users to toggle between RouterOS or SwOS based on their preference, with the former providing routing and Layer 3 features. It boasts a robust ARM 32bit architecture powered by a 98DX3236 CPU. This switch ensures redundant power supply with two DC jacks and offers outstanding price-to-performance ratio, making it an ideal choice for both personal and professional use.

Switching results

Mode Configuration 1518 byte 512 byte 64 byte
kbps Mbps kbps Mbps kbps Mbps
Switching Non-blocking Layer 2 throughput 3,332.2 40,466.8 9,633.5 39,458.6 61,011.9 31,238.1
Switching Non-blocking Layer 2 capacity 3,332.2 80,933.7 9,633.5 78,917.3 61,011.9 62,476.2
Switching Non-blocking Layer 1 throughput 3,332.2 41,000.0 9,633.5 41,000.0 61,011.9 41,000.0
Switching Non blocking Layer 1 capacity 3,332.2 82,000.0 9,633.5 82,000.0 61,011.9 82,000.0

Ethernet test results

CRS305-1G-4S+IN 98DX3236 all port test
Mode Configuration 1518 byte 512 byte 64 byte
kpps Mbps kpps Mbps kpps Mbps
Bridging none (fast path) 104,3 1266.6 273,5 1120.3 449 229.9
Bridging 25 bridge filter rules 104 1263.0 104,6 428.4 104,5 53.5
Routing none (fast path) 104,3 1266.6 273,9 1121.9 343,5 175.9
Routing 25 simple queues 104,3 1266.6 136,9 560.7 137,4 70.3
Routing 25 ip filter rules 64,8 786.9 65,9 269.9 65,8 33.7

All tests are done with Xena Networks specialized test equipment (XenaBay), and done according to RFC2544 (Xena2544)

Max throughput is determined with 30+ second attempts with 0,1% packet loss tolerance in 64, 512, 1518 byte packet sizes

Test results show device maximum performance, and are reached using mentioned hardware and software configuration, different configurations most likely will result in lower results

10/100/1000 Ethernet ports
Product code
ARM 32bit
CPU core count
CPU nominal frequency
800 MHz
141 x 115 x 28 mm
License level
Operating System
RouterOS / SwitchOS
Size of RAM
512 MB
Storage size
16 MB
Storage type
Max Power consumption
18 W
PoE in
PoE in input Voltage
12-57 V
Number of AC inputs
3 (PoE-IN, DC jack)
DC jack input Voltage
12-57 V
CPU temperature monitor
Max power consumption without attachments
10 W
SFP+ ports
Operating Temperature
-40°C to 70°C
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