Sorry for the issues in getting the NIC to work.  The system will certainly take additional network cards, the T110 II has 4 PCIe slots:  Two x8 slots (one with x16 connectors) One x4 slot (with x8 connector) One x1 slot The onboard port is the Broadcom® BCM5722 gigabit Ethernet adapter.  When it comes with Dell servers and 3rd part cards, issues can arise in if you have a network card that is certified to work with the unit.  Dell can only support cards that are valid and tested within the server. A very common card we see added to the system is the Broadcom 5709, Dragonfly PCIE4 Network card.  The card is popular since it can be teamed with the onboard NIC. Regarding your SATA RAID card, issues are the same there in regards to uncertified cards. Lastely, I would ensure that you have the cards in the proper slots, below is the link to the system manual, page 68 has the details regarding slot priority and system specific PCIe information support.dell.com/.../T110.pdf
HelloI need an additional NIC for my T110II but it do not detect a TP-LINK TG-3468 PCI-express card. The server boot up but I don't see the boot rom screen (NIC embedded bios) and Windows do not detect the new device.The T110II do not recognize an AS-Rock SATA RAID card with boot rom too.I think the problem comes from the boot rom of these PCI-e cards. Is there a solution to detect these cards?Or do you know a compatible cheap gigabit network card?  I already asked to DELL support from my country, and I have no reply. Thanks
Can PowerEdge T110 II server add a network card?