MikroTik CRS310-8G+2S+IN vs Ubiquiti UniFi Flex Mini 2.5G

Researched, not hands-on tested.How we review ›

all judged against network switches at a similar price

The MikroTik CRS310-8G+2S+IN scores 7.2/10 overall, ahead of the Ubiquiti UniFi Flex Mini 2.5G at 6.3/10.

The MikroTik CRS310-8G+2S+IN leads on port speeds, management and port count and uplinks.

The Ubiquiti UniFi Flex Mini 2.5G leads on noise and efficiency.

They score the same on poE and firmware and support.

The biggest difference is noise and efficiency, where the Ubiquiti UniFi Flex Mini 2.5G scores 8/10 to the MikroTik CRS310-8G+2S+IN's 3/10.

MikroTik CRS310-8G+2S+IN

7.2/10verdict: buy

The MikroTik CRS310-8G+2S+IN is for homelabbers and small-office admins who want 2.5GbE access ports with 10G SFP+ uplinks. It suits people who are happy to configure VLANs, link aggregation and ACLs in RouterOS. It is a poorer fit for anyone who needs PoE or wants a low-power, set-and-forget switch.

Typically about £185.57 in the UK when we researched itSearch Amazon UK

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Ubiquiti UniFi Flex Mini 2.5G

6.3/10verdict: good, not the best

The UniFi Flex Mini 2.5G is for people who run UniFi gear and want multi-gig speeds on a small five-port switch. It suits a home office or homelab that needs a few 2.5GbE devices linked and managed from the UniFi Network application. It is a poor fit for anyone who needs PoE output, more than five ports or fibre uplinks.

Typically about £52.99 in the UK when we researched itCheck price at Amazon UK

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

Criterion	Weight	MikroTik CRS310-8G+2S+IN	Ubiquiti UniFi Flex Mini 2.5G
Port speeds	30%	9/10	7/10
Management	20%	9/10	7/10
Port count and uplinks	15%	8/10	4/10
Noise and efficiency	15%	3/10	8/10
PoE	10%	5/10	5/10
Firmware and support	10%	5/10	5/10
Overall		7.2/10	6.3/10

Specifications

Spec	MikroTik CRS310-8G+2S+IN	Ubiquiti UniFi Flex Mini 2.5G
Ports	8 x 2.5GbE RJ45 plus 2 x SFP+, and one USB type-A port	5 x 2.5 GbE RJ45 ports
Port speeds	RJ45 ports 2.5G; SFP+ cages support 1G, 2.5G and 10G	2.5G/1G/100M/10M per port
Management	RouterOS v7 or SwitchOS; VLANs, link aggregation and ACL rules on RouterOS	not listed
Uplinks (SFP/SFP+)	2 x SFP+	None; no SFP/SFP+ uplink ports
Switching capacity	Non-blocking Layer 1 capacity 80000 Mbps; Layer 2 about 78,959.7 Mbps at 1518-byte frames	25 Gbps switching capacity, 12.5 Gbps non-blocking throughput, 19 Mpps forwarding rate, 256 VLANs, 4,000 MAC addresses
Cooling	1 fan	Fanless (retailer listing; not on manufacturer spec page)

Strengths and weaknesses

MikroTik CRS310-8G+2S+IN

+ Eight 2.5GbE ports plus two 10G-capable SFP+ cages
+ RouterOS offers VLANs, link aggregation and ACL rules
+ Wide 18–57 V DC input and -40°C to +60°C range
− One fan, and owners report higher power draw than expected
− Owners report 2.5G link negotiation problems
− No PoE listed

Skip it if:

Buyers who need PoE for access points, cameras or phones
Anyone who wants a quiet, low-power switch for a living space
Buyers who want a simple unmanaged switch with no configuration

Read the full MikroTik CRS310-8G+2S+IN review ›

Ubiquiti UniFi Flex Mini 2.5G

+ All five ports run 2.5GbE
+ Managed through UniFi Network, with 256 VLANs
− Only five ports
− No PoE output
− No SFP or SFP+ uplink

Skip it if:

Buyers who need PoE output for access points or cameras
Anyone who needs more than five ports or SFP/SFP+ uplinks
Users who want advanced layer 2 or layer 3 switching features

Read the full Ubiquiti UniFi Flex Mini 2.5G review ›

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