Cisco Intel X520 Dual Port 10Gb SFP+ Adapter - PCI Express 2.0 - 10 Gbit/s Data Transfer Rate - Intel X520 - 2 Port(s) - Optical Fiber - SFP+ - Plug-in Card

Black Box 10-GbE PCI-E Network Adapter (NIC) - (2) SFP+ Ports - PCI Express x8 - 2 Port(s) - Optical Fiber - 10GBase-SR, 10GBase-LR - Plug-in Card

StarTech.com 2S1P PCI Express Serial Parallel Combo Card - Add a parallel port and two RS-232 serial ports to your PC through a PCI-Express expansion slot - PCI Express Serial Parallel Card - PCIe Serial Parallel Combo Card Adapter - 2 Port Serial and 1 Port Parallel - Comes with Breakout Cable - Du

StarTech.com PCI Express Wireless N Adapter - 300 Mbps PCIe 802.11 b/g/n Network Adapter Card - 2T2R 2.2 dBi - Add high speed Wireless-N connectivity to a desktop PC through PCI Express - PCIe Wireless Network Card / PCI Express Wireless NIC / Wireless PCIe N Card - Wireless 802.11 N / G (300 Mbps)