Can you run the ethernet port to another switch or is it strictly for management purposes?

can I use this as two 2.5gb aggregation for my nas and connect to my desktop with 5gb ethernet port?

Anyone try connecting a 10g RJ45 transceiver in one of these sfp ports? I'd love to convert 10g fiber to 10g copper ethernet.

I run this switch with three (3)10G RJ45 transceivers (10Gtek for Cisco SFP-10G-T-S Compatible 10GBase-T SFP+ 10 Gigabit RJ45 Copper Transceiver 30-Meter) and one (1) DAC cable (10Gtek 10G SFP+ DAC Cable - 10GBASE-CU Passive Direct Attach Copper Twinax SFP Cable for Cisco SFP-H10GB-CU3M, Ubiquiti, D-Link, Supermicro, Netgear, Mikrotik, ZTE Devices, 3m. Works like a champ.

Can i use regular cat7 rj45 cables in the sfp+ to achieve 10gbe speeds, or do i need to use a different cable?

When using RJ45 sfp+ modules, you do not need Cat7 (not technically a US standard anyway). Cat 6a must be able to carry 10mbit for at least 100M. Cat 6 has to be able to do at least 55M, longer than any most any home or small business run is going to be. Cat 5e, while not officially rated, will generally work fine for 10gbit over the length of runs used in homes.

Can I use this as 1 fiber uplink to data center then the other 3 fiber ports to different buildings and the copper to connect to another switch?

Yes. Just think of it as a switch. All 5 ports are on the same network. I have 2 installed essentially as you described.

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MikroTik CRS305-1G-4S+in Network switch Managed Gigabit Ethernet (10/100/1000) Ethernet power (PoE) White

MikroTik CRS305-1G-4S+in Network switch Managed Gigabit Ethernet (10/100/1000) Ethernet power (PoE) White

Product ID: 313962433

Details

Brand
Mikrotik
Colour
Silver
Compatible devices
Desktop
Included components
2 x Power
Number of ports
5

⚡4 x 10G SFP+ ports

🔌1 x 1G RJ45 PoE port

🛡️Dual boot RouterOS/SwOS

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Description

🚀 Elevate your network game with MikroTik’s silent speed demon!

COMPACT POWERHOUSE - Small footprint with big performance—perfect for modern workspaces craving efficiency and style.
DUAL OS FLEXIBILITY - Switch between RouterOS and SwOS for tailored network management—simplicity or advanced routing at your fingertips.
BLAZING 10 G CONNECTIVITY - Four ultra-fast SFP+ ports deliver lightning-speed data transfer for your high-demand network.
WHISPER QUIET METAL DESIGN - Sleek, fanless metal chassis ensures silent operation while maintaining robust durability.
SEAMLESS PO E POWER DELIVERY - Power your devices effortlessly with 802.3af/at PoE/PoE+ and 12-57V passive PoE support.

The MikroTik CRS305-1G-4S+in is a compact, fanless managed switch featuring 4 high-speed 10G SFP+ ports and 1 Gigabit RJ45 PoE port. It supports versatile power options including 802.3af/at PoE/PoE+ and passive PoE, housed in a durable metal case. With dual boot capability between RouterOS and SwOS, it offers flexible network management for both simple and advanced setups, making it a top-tier choice for professionals seeking powerful, quiet, and stylish networking solutions.

Specifications

ASIN	B07LFKGP1L
Best Sellers Rank	#42,713 in Computers ( See Top 100 in Computers ) #303 in Network Switches
Brand	Mikrotik
Built-In Media	2 x Power Outlets
Case Material Type	Metal
Color	Silver
Compatible Devices	Desktop
Customer Reviews	4.7 4.7 out of 5 stars (1,085)
Data Transfer Rate	1000 Megabits Per Second
Global Trade Identification Number	00680392660855, 05903148914527
Interface	SFP+, RJ45
Item Dimensions L x W x H	14.1L x 11.5W x 2.8H centimeters
Item Type Name	Network Switches
Item Weight	454 g
Manufacturer	Mikrotik
Mfr Part Number	CRS305-1G-4S+IN
Model Number	CRS305-1G-4S+IN
Number of Ports	5
Switch Type	Fixed, Managed, PoE
UPC	680392660855
Unit Count	1 Count
Upper Temperature Rating	40 Degrees Celsius
Voltage	57 Volts

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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