Synology Ethernet Adapter E10G15-F1 - Synology E10G15-F1 is a 10 Gigabit single SFP+ port PCI Express x4 adapter specially designed for Synology XS+/XS series NAS servers. Featuring high speed data transmission at 10 Gbps link over fiber-optic cabling, 802.1Q VLAN tagging, and 802.3x flow control, E10G15-F1 provides a cost-effective solution to meet business demands.