Qnap Dual-Port 10 Gigabit SFP+ DAC Network Expansion Card (LAN-10G2DA-U-EMULEX) Applied Model: TS-870U-RP, TS-879 Pro Applied Model: TS-879U-RP, TS-EC879U-RP, TS-1079 Pro, TS-1270U-RP Applied Model: TS-1279U-RP, TS-EC1279U-RP, TS-1679U-RP, TS-EC1679U-RP