MikroTik CRS305-1G-4S+IN User Manual

CRS305-1G-4S+IN
This device is a 10 Gigabit SFP+ switch, powered by RouterOS. It features two redundant DC inputs. The device
has four SFP+ cages (modules are not included) for high-performance 10GbE connectivity (1.25 Gbit modules are
also supported) and a 1GbE copper port for management. The device is ready to use as a switch.
Quickstart
• Mount unit or place on the flat surface, please see Mounting paragraph for instructions.
• Choose your powering solution, please see Powering section for possibilities.
• The Initial connection has to be done via the Ethernet cable, using the MikroTik Winbox utility.
• Use Winbox to connect to the default IP address of 192.168.88.1 from any port, with the username admin
and no password, the device is set up as a switch.
• We recommend clicking the “Check for updates” button and updating your system software to the latest
version to ensure the best performance and stability.
• Set up your password to secure the device.
Mounting
This device is designed for use indoors by placing it on the flat surface or mounting on the wall, when mounting on
the wall, please ensure that cable feed is pointing downwards. We recommend using Cat5/6 shielded cable for our
devices. The IP rating scale for this device is IPX0.
Powering
The device accepts powering from the two DC power jacks (redundancy fail-over) or from the first Ethernet port:
• Direct input power jacks DC1, DC2 (5.5 mm outside and 2 mm inside, female, pin positive) accept DC ⎓
12-57 V DC.
• The first Ethernet port accepts passive or 802.3af/at Power over Ethernet in the range of DC ⎓ 12-57 V.
The power consumption of this device under maximum load with fiber SFP modules is 10 W when using all RJ10
copper modules, up to 18 W.
When using 802.3af/at to power this device, we recommend not using grounding for best compatibility.
Connecting to a POE Adapter:
1. Connect the Ethernet cable from the device to the POE port of the POE adapter.
2. Connect an Ethernet cable from your LAN to the LAN port of the POE adapter, please mind arrows for data
and power flow.
3. Connect the power cord to the adapter, and then plug the power cord into a power outlet.
See mikrotik.com/products for the latest version of this document. Document #50608 Modified on: 09.JUL.2019

MikroTik CRS305-1G-4S+IN Specifications

General

Switch type	Managed
Power connector	DC-in jack
SFP+ module slots quantity	4
Installed SFP modules quantity	-
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Basic switching RJ-45 Ethernet ports quantity	1
10G support	Yes
Networking standards	IEEE 802.3af, IEEE 802.3at
MAC address table	- entries
Product color	White
Rack mounting	No
DC input voltage	12 - 57 V
Power consumption (max)	18 W
Power consumption (typical)	10 W
Flash memory	16 MB
Internal memory	512 MB
Processor frequency	800 MHz
Operating temperature (T-T)	-40 - 70 °C
Harmonized System (HS) code	85176990

Weight and Dimensions

Depth	115 mm
Width	141 mm
Height	28 mm