One of my clients is getting a server that is not going to immediately have 10GigE but will probably have it in the not too distant future. Which of the following 10GigE cards from Dell would be most suitable? Note that the 10GigE switch is yet to be purchased. Some of these cards appear to use fiber and some use twisted-pair. Obviously buying a network adapter now is going to constrain the choice of switches in the future. Any suggestions? Emulex OneConnect OCe14102-N1-D 2-port PCIe 10GbE NIC [$574.20 or $6/week-1] QLogic 57810 DP 10Gb DA/SFP+ Converged Network Adapter [$478.50 or $5/week-1] QLogic 57810 Dual Port 10Gb Base-T Network Adapter [$784.30 or $8/week-1] Mellanox ConnectX-3 Pro Dual Port 10 GbE SFP+ PCIE Adapter Full Height, V2 [$762.30 or $8/week-1] Intel Ethernet X540 DP 10GBASE-T Server Adapter [$922.90 or $9/week-1] Intel X520 DP 10Gb DA/SFP+ Server Adapter [$705.10 or $7/week-1] Intel X550 Dual Port 10G Base-T Adapter, Full Height [$860.20 or $9/week-1] Intel X710 Dual Port 10Gb Direct Aattach, SFP+, Converged Network Adapter [$705.10 or $7/week-1] Intel X710 Quad Port 10Gb Direct Aattach, SFP+, Converged Network Adapter [$1,144.00 or $12/week-1] -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/