Ethernet switch compatible with PCI-E interface.
Ethernet switch compatible with PCI-E interface.
The Mikrotik "Card" is a standalone router that operates independently from the rest of the network. It functions similarly to how the OS would behave if it crashed, allowing access to IPMI or a Raspberry Pi KVM via PCI-E. The downside is that the current card only has one Ethernet port, which might not be sufficient, prompting the need for an external switch. Since an external option isn't viable, the optimal choice is an internal card.
It will be more economical to purchase a motherboard featuring KVM over IP integrated, and link the datacenter to two distinct networks—such as a private network for remote access and a general network for server communication. For KVM over IP functionality, you’d typically require a router with static IPs or those provided by the datacenter, followed by proper routing to your KVM Pi. This setup can be complex.
A simpler approach might involve selecting a motherboard that already includes remote management capabilities. You could acquire an affordable 10$ switch/router and install it within the server enclosure, powering it directly from the server’s supply (5V or 12V). The main challenge would be ensuring the router restarts with the PC, which may need a standby power source.
Alternatively, add extra Ethernet ports to a bracket or create a cutout in the server case for an internal panel with Ethernet connectors: https://www.digikey.com/short/804tffc8. For compact setups, consider cards that fit M.2 connectors—cheaper options are available on eBay (e.g., 10Gbps models, mini-PCIe cards, or adapter cards). You can also use M.2 to PCIe adapter cards for hidden installation: https://www.ebay.com/itm/286046460605.