Upgrade to the MikroTik RouterBOARD Cloud Router Switch MT-CRS310-1G-5S-4S+IN for high performance 10 Gigabit fibre connections, with five 1G SFP ports, four 10G SFP+ ports, an additional Gigabit Ethernet port, and a modern ARM v7 CPU with 256MB of RAM for improved cooling. Plus, the Marvell switch-chips ensure phenomenal speed and the option for PoE-in.

Tech Specs

Click here for the CRS310-1G-5S-4S+IN datasheet.

Device Specifications
Specifications
Product code	CRS310-1G-5S-4S+IN
Architecture	ARM 32bit
CPU	98DX226S
CPU core count	2
CPU nominal frequency	800 MHz
Switch chip model	98DX226S
Dimensions	200 x 166 x 44 mm
RouterOS license	5
Operating System	RouterOS v7 / SwitchOS
Size of RAM	256 MB
Storage size	16 MB
Storage type	FLASH
MTBF	Approximately 200'000 hours at 25C
Tested ambient temperature	-40°C to 70°C
Suggested price	$199.00
Powering
Number of DC inputs	2 (PoE-IN, DC jack)
DC jack input Voltage	18-57 V
Max power consumption	20 W
Max power consumption without attachments	8 W
PoE in	802.3af/at
Cooling type	1 fan
PoE in input Voltage	18-57 V
Ethernet
10/100/1000 Ethernet ports	1
Fiber
SFP ports	5
SFP+ ports	4
Peripherals
Serial console port	RJ45
Other
CPU temperature monitor	Yes
PCB temperature monitor	Yes
Voltage Monitor	Yes
Certification & Approvals
Certification	CE, EAC, ROHS
IP	20

FAQs

Q: What is the MikroTik CRS310‑1G‑5S‑4S+IN used for?
A: This device is ideal for small offices or ISPs that require reliable fiber aggregation and high‑speed uplinks. With five 1 Gbps SFP ports and four 10 Gbps SFP+ ports, it can handle both access and backbone traffic over long fiber runs.

Q: What are the port and connectivity options on the CRS310?
A: It includes:

1 × Gigabit RJ45 Ethernet port
5 × 1 Gbps SFP slots
4 × 10 Gbps SFP+ slots
This gives flexible fiber uplink options plus a copper port for management or low‑speed use.

Q: What CPU, memory, and software does this switch use?
A: It has an ARMv7 (98DX226S) CPU running at 800 MHz, 256 MB RAM, and 16 MB flash storage. It supports dual‑boot with RouterOS (Level 5) and SwOS for either routing or simple switching use.

Q: How is the CRS310 powered and what are its power input options?
A: The switch supports two power inputs: a DC jack (18–57 V) and 802.3af/at PoE‑in on the RJ45 port. Its maximum power consumption is about 20 W, with an idle draw of around 8 W.

Q: What performance and switching features does the CRS310 offer?
A: It supports hardware‑offloaded VLAN filtering and some Layer‑3 routing, improving performance. Its switching capacity supports non‑blocking L2 throughput up to ~45 Gbps, making it effective for dense fiber deployments or aggregation.

Resources

CRS310-1G-5S-4S+IN - User manuals - MikroTik Documentation

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