The little bit that I know about the Cisco 300 series switches seems that normal access for configuration is via the web based GUI. So I would assume that connecting to one of its Ethernet interfaces and using your browser is the normal way to manage the switch.
It is not clear to me how much configuration has already been done and especially whether you have already assigned an address (though the question implies that you have not yet configured an address in which case the switch would be using its default address). I found some helpful information about how to determine the addressing status of the switch
When the device is using the factory default IP address of 192.168.1.254, its power LED flashes continuously. When the device is using a DHCP assigned IP address or an administrator-configured static IP address, the power LED is on solid.
at this link where you should find much helpful information.
What is SecureX?
Cisco SecureX is included with all Secure Endpoint (formerly AMP for Endpoints) subscriptions. SecureX is a cloud-native platform that aggregates capabilities across your security environment. It’s designed to simplify your environment, ...
Cisco ISE Secure Wired Access Prescriptive Deployment Guide
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Join us live on Tuesday, January 19 at 10:00 am PT (and on demand after) as we discuss the latest version of ATT&CK and the expansion of TTPs in v8.
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