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.

Specifications Details Product code CRS305-1G-4S+IN Architecture ARM 32bit CPU 98DX3236 CPU core count 1 CPU nominal frequency 800 MHz Dimensions 141 x 115 x 28 mm License level 5 Operating System RouterOS / SwitchOS Size of RAM 512 MB Storage size 16 MB Storage type FLASH Tested ambient temperature -40°C to 70°C Suggested price $149.00 Powering Details PoE in 802.3af/at PoE in input Voltage 12-57 V Number of DC inputs 3 (DC jack, PoE-IN) DC jack input Voltage 12-57 V Max power consumption 18 W Max power consumption without attachments 10 W FAN count Passive Ethernet Details 10/100/1000 Ethernet ports 1 Fiber Details SFP+ ports 4 Other Details CPU temperature monitor Yes Certification & Approvals Details Certification CE, EAC, ROHS Included parts

24V 0.8A power adapter Brochure Open Quick Guide Open RouterOS current release Download Block Diagram Open SFP compatibility list Open PoE-IN compatibility list Open RouterOS software manual Open SwOS software manual Open Declaration of conformity Open (CE) High resolution images Switching results CRS305-1G-4S+IN Mode Configuration 1518 byte 512 byte 64 byte kpps Mbps kpps Mbps kpps 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

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