Before you work on any equipment, be aware of the hazards involved with electrical circuitry, and be familiar with standard practices for preventing accidents.
Ultimate disposal of this product should be handled according to all national laws and regulations.
The Installation of the equipment must comply with local and national electrical codes.
This unit is intended to be installed in the rackmount. Please read the mounting instructions carefully before beginning installation. Failure to use the correct hardware or to follow the correct procedures could result in a hazardous situation to people and damage to the system.
This product is intended to be installed indoors. Keep this product away from water, fire, humidity, or hot environments.
Use only the power supply and accessories approved by the manufacturer, which can be found in the original packaging of this product.
Read the installation instructions before connecting the system to the power source.
We cannot guarantee that no accidents or damage will occur due to the improper use of the device. Please use this product with care and operate at your own risk!
In the case of device failure, please disconnect it from power. The fastest way to do so is by unplugging the power plug from the power outlet.
It is the customer's responsibility to follow local country regulations, including operation within legal frequency channels, output power, cabling requirements, and Dynamic Frequency Selection (DFS) requirements. All Mikrotik devices must be professionally installed.
- Connect your PC to any Ethernet port.
- Connect the power adapter to the DC jack.
- Set IP for your PC to 192.168.88.2
- The Initial connection has to be done via the Ethernet cable, using the MikroTik Winbox utility or Web browser.
- Use Winbox or Web browser to connect to the default IP address of 192.168.88.1 from any port, with the username admin and no password (or, for some models, check user and wireless passwords on the sticker).
- We recommend clicking the “Check for updates” button and updating your RouterOS software to the latest version to ensure the best performance and stability. The device needs to have an active internet connection.
- To manually update the device go to our webpage and download the latest software version packages.
- Open Winbox and upload them to the Files menu.
- Reboot the device.
- Set up your password to secure the device.
- Number of DC inputs 3 (PoE-in, DC jack, 2-pin terminal)
- PoE-in input Voltage 42-57 V 802.3af/at
- DC jack input Voltage 24-57 V
- 2-pin terminal input Voltage 24-57 V
- Power adapter nominal voltage 48 V
- Power adapter nominal current 1.2 A
- Max power consumption (without attachments) 7 W
- Max power consumption 17 W
* -48V power is NOT compatible with PoE-in and +24V (or any other minus grounded PSU)! We strongly
suggest using the included power supply
Connecting to a POE Adapter:
- Connect the Ethernet cable from the device to the POE port of the POE adapter.
- Connect an Ethernet cable from your LAN to the LAN port of the POE adapter, please mind arrows for data and power flow.
- Connect the power cord to the adapter, and then plug the power cord into a power outlet.
The device supports booting RouterOS (for complete routing and switching configuration) or SwOS (for only use as a switch). By default, the device will boot RouterOS, but you can reboot into SwOS in the following ways:
- From SwOS: In the System menu, click the "Boot RouterOS" button at the bottom of the page.
- From RouterOS: in the System, RouterBOARD menu, click "Settings" and there select "Boot OS".
RouterOS includes many configuration options in addition to what is described in this document. We suggest starting here to get yourself accustomed to the possibilities: https://wiki.mikrotik.com/wiki/Manual:CRS3xx_series_switches.
The Initial connection has to be done via the Ethernet cable, using the MikroTik Winbox utility. Winbox should be used to connect to the default IP address of 192.168.88.1 from any port, with the username admin and no password.
For recovery purposes, it is possible to reinstall the device from the network, see the Reset button.
In case the IP connection is not available, the Winbox tool (https://mt.lv/winbox) can also be used to connect to the MAC address of the device. Applies only when the device has booted RouterOS.
Extension Slots and Ports
- Product code CRS305-1G-4S+OUT
- CPU 98DX226S 800 MHz
- CPU architecture ARM 32bit
- CPU core count 1
- Size of RAM 256 MB
- Storage 16 MB, Flash
- Number of 1G Ethernet ports 1
- Number of 10G SFP+ ports 4
- Switch chip model 98DX226S
- Dimensions 330 x 200 x 70 mm
- Operating system RouterOS v7, License level 5 / SwitchOS
- Operating temperature -40°C to +70°C
To use the reset button, hold it and then turn on the device, while still holding the button.
- Release the button when the green LED starts flashing, to reset the RouterOS configuration. To not load the backup bootloader, you can start holding the button after power is already applied.
- Release the button after LED is no longer flashing (~20 seconds) to cause the device to look for Netinstall servers (required for reinstalling RouterOS over the network). You can also release the button at the time when the device has appeared in the Netinstall utility device list.
Regardless of the above option used, the system will load the backup RouterBOOT loader if the button is pressed before power is applied to the device. Useful for RouterBOOT debugging and recovery.
The package includes the following accessories that come with the device:
Please visit the wiki pages for the MikroTik SFP module compatibility table: https://wiki.mikrotik.com/wiki/MikroTik_SFP_module_compatibility_table
Operating system support
The device supports dual boot SwOS software version 2.9 and RouterOS v7. The specific factory-installed version number is indicated in the RouterOS menu /system resource. Other operating systems have not been tested.
To avoid pollution of the environment, please separate the device from household waste and dispose of it in a safe manner, such as at designated waste disposal sites. Familiarize yourself with the procedures for the proper transportation of the equipment to the designated disposal sites in your area.
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used with the unit to ensure compliance.
Innovation, Science and Economic Development Canada
This device contains license-exempt transmitter(s)/receiver(s) that comply with Innovation, Science, and Economic Development Canada’s license-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes: 1) L’appareil ne doit pas produire de brouillage; 2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [A] est conforme à la norme NMB-003 du Canada.
CAN ICES-003 (A) / NMB-003 (A)
(EN) Technical Specifications / (DE) Technische Spezifikationen / (FR) Spécifications techniques / (IT) Specifiche tecniche / (ES) Especificaciones técnicas / (RU) Технические характеристики:
|(EN) Product Power Input Options|
(DE) Produkt Stromquellen Optionen
(FR) Options d'entrée d'alimentation du produit
(IT) Opzioni di ingresso alimentazione del prodotto
(ES) Opciones de entrada de energía del producto
(RU) Варианты входной мощности продукта
|(EN) DC Adapter Output Specification|
(DE) Ausgangsspezifikationen des Gleichstromadapters
(FR) Spécifications de sortie de l'adaptateur de courant continu
(IT) Specifiche di uscita dell'adattatore di corrente continua
(ES) Especificaciones de salida del adaptador de corriente continua
(RU) Выходные характеристики адаптера постоянного тока
(EN) IP class of the enclosure
|(EN) Operating Temperature|
(FR) température de fonctionnement
(IT) temperatura di esercizio
(ES) Temperatura de funcionamiento
(RU) Рабочая Температура
|Voltage, V||Current, A|
DC Jack (24-57 V DC)
PoE In Ethernet Port (42-57 V DC)
2-pin terminal (24-57 VDC)
The maximum operating temperature of the product should be combined with the power adapter, therefore the maximum operating temperature of the product with the certified power adapter is +45° C.