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CRS328-4C-20S-4S+RM

The CRS328-4C-20S-4S+RM is a 28 independent port switch with a combo group. This device has twenty SFP ports, four SFP+ ports for 10G modules and four combo ports, where you can choose to use SFP or RJ45 ports from the combo group. These ports can also be software selected, so if you have plugged in all eight cables, you can use scripting, to decide which four combo ports will be active.

  • The device comes in a 1U rackmount case with two 100-240 V power supplies with failover functionality. A RJ45 console port is available for management and debugging, and a mode button can be customised to execute any RouterOS commands.
  • The device has a “Dual boot” feature that allows you to choose between two operating systems – RouterOS or SwOS.

CRS328-4C-20S-4S+RM

This device has twenty SFP ports, four SFP+ ports for 10G modules and four combo ports, where you can choose to use SFP or RJ45 ports from the combo group. These ports can also be software selected, so if you have plugged in all eight cables, you can use scripting, to decide which four combo ports will be active. The device comes in a 1U rackmount case with two 100-240 V power supplies with failover functionality. A RJ45 console port is available for management and debugging, and a mode button can be customised to execute any RouterOS commands.

CRS328-4C-20S-4S+RM - Features

Powering

The device accepts powering from two IEC connectors. AC input range 100-240 V. The power consumption under maximum load can reach 43 W.

Booting process

The device supports booting RouterOS (for routing and switching configuration) or SwOS (for only using as a switch). By default, the device will boot RouterOS, but you can reboot into the other operating system in the following ways:
• From SwOS: In the System menu, click the “Boot RouterOS” button on the bottom of the page.
• From RouterOS: in the System, RouterBOARD menu, click “Settings” and there select “Boot OS”. It is also possible to select the OS and configure other boot settings via the serial console menu.

Combo ports

The four combo interfaces each have two physical connectors of which the only one can be used at the same time. The ports will be automatically represented as combo1-4 in the RouterOS. It is possible to select which physical port will be used in RouterOS software Ethernet menu. If left to default “auto”, and both F/T have cables plugged in, SFP will take priority. For example, if you have plugged an Ethernet cable into the 1T port and an SFP module in the 1F port, you will have to choose in RouterOS which one to use. Double click the respective combo interface in RouterOS GUI to see which socket is used.

General
Product code: CRS328-4C-20S-4S+RM
Architecture: ARM 32bit
CPU: 98DX3236
CPU core count: 1
CPU nominal frequency: 800 MHz
Dimensionss: 443 x 194 x 44 mm
RouterOS license: 5
Operating System: RouterOS / SwitchOS
Size of RAM: ‎512 MB
Storage size: ‎16 MB
Storage type: FLASH
MTBF: Approximately 200’000 hours at 25C
Tested ambient temperature: -20°C to 60°C
Powering
Number of AC inputs: 2
AC input range: 100-240
Max power consumption: 43 W
FAN count: 4
Ethernet
Ethernet Combo ports: 4
Fiber
SFP ports: 20
SFP+ ports: 4
Peripherals
Serial console port: RJ45
Others
CPU temperature monitor: Yes
Voltage Monitor: Yes
Mode button: Yes
Certification & Approvals
Certification: CE, EAC, ROHS