Wired Mellanox 200Gb Network Adapter ConnectX-6 VPI (Dual 10GbE/25GbE/40GbE/50GbE/100GbE/200GbE),$+2195 Sound Card Use Onboard Sound ASUS Xonar SE 5.1 Channel Sound Card,$+55 Creative Sound Blaster Z SE Sound Card and DAC w/ ASIO,$+105 ...