![MikroTik CRS305-1G-4S+IN | Switch | 1x RJ45 1000Mb/s, 4x SFP+ Ilość portów LAN1x [10/100/1000M (RJ45)]](https://www.batna24.com/img2/500/325752_1.webp?20989284221)
CRS305 is a compact but very efficient switch, equipped with four SFP+ ports, up to 10 Gbit per port. The device has a 1 Gbit Ethernet port for management and two DC ports for power redundancy. The device is in a very elegant and compact metal housing without fans, which ensures silent operation.
The device has a "Dual boot" function, which allows you to choose between two operating systems - RouterOS or SwitchOS. If you prefer to use a simplified operating system with specific switch functions, use SwOS. If you want to be able to use routing and other layer 3 functions on your CRS, use RouterOS. You can select the desired operating system from RouterOS, SwOS, or RouterBOOT loader settings.
| Features / filters | |
| LAN standard | Gigabit Ethernet 10/100/1000 Mb/s |
| Number of LAN ports | 1x 10/100/1000BaseTX (RJ45), 4x [10G (SFP+)] , |
| 10G support | Yes |
| Basic switching RJ-45 Ethernet ports quantity | 1 |
| Basic switching RJ-45 Ethernet ports type | Gigabit Ethernet (10/100/1000) |
| Built-in processor | Yes |
| DC input voltage | 12 - 57 |
| Depth | 115 |
| Flash memory | 16 |
| Harmonized System (HS) code | 85176990 |
| Height | 28 |
| Installed SFP+ modules quantity | 4 |
| Internal memory | 512 |
| Management | CLI - Command Line Interface, By web browser, |
| Networking standards | IEEE 802.3af,IEEE 802.3at |
| Operating temperature (T-T) | -40 - 70 |
| Power connector | DC-in jack |
| Power consumption (max) | 18 |
| Power consumption (typical) | 10 |
| Power over Ethernet (PoE) | Yes |
| Processor frequency | 800 |
| Product colour | White |
| Rack mounting | No |
| Stackable | No |
| Switch type | Managed |
| Switching layer | 3 |
| Type of case | Desktop |
| Width | 141 |
| Basic technical parameters | |
| Product code | CRS305-1G-4S+IN |
| CPU | 98DX3236A1 800 MHz |
| RAM | 512 MB |
| Type of memory | Flash |
| Size of memory | 16 MB |
| Chip model for the switch | 98DX3236A1 |
| 10/100/1000 Ethernet ports | 1 |
| SFP+ Ports | 4 |
| Operating system | SwOS / RouterOS |
| PoE in | Yes |
| Input voltage | 12 - 57 V (DC jack and PoE in) |
| Number of DC sockets | 2 |
| Dimensions | 141 x 115 x 28 mm |
| Operating temperature | -40°C .. +70°C tested |
| Maximum power consumption | 12 W |
| Licence level | 5 |
It is a managed switch equipped with 1 Gigabit Ethernet port and 4 SFP+ slots (10 Gb/s).
The product can be powered via PoE (passive or 802.3af/at) or one of the two DC outlets.
CRS305-1G-4S+IN This function allows you to choose between SwOS and RouterOS.
