aqc111.ko - Aquantia USB 2.5/5GbE Controllers

atlantic.ko - Marvell/Aquantia Corporation Network Driver

r8125.ko - Realtek RTL8125 2.5Gigabit Ethernet driver

r8152.ko - Realtek RTL8152/RTL8153 USB Ethernet Adapters

igc.ko - Intel 2.5G Ethernet Linux Driver

ixgbe.ko - Intel 10GbE PCI Express Linux Network Driver

ixgb.ko - Intel PRO/10GbE Network Driver

Just add/overwrite modules into /lib/modules/ and reboot your Synology.... driver should be loaded automatically.