Synology E10G15-F1 is a 10 Gigabit single SFP+ port PCI Express x 4 adapter specially designed for Synology XS+/XS series NAS servers. Featuring 10 Gbps data transmission over fiber-optic cabling, 802.1Q VLAN tagging, & 802.3x flow control, E10G15-F1 provides a cost-effective solution for high-performance access demands. E10G15-F1 is backed with Synology's 5-year limited warranty & supports the following XS+/XS series servers: RS3614xs+ RS3614 (RP)xs RS10613xs+ RS3413xs+ RS3412 (RP)xs RS3411 (RP)xs DS3615xs DS3612xs DS3611xs