The 'card' is called 'Intel High Definition Audio', it is on board. Perfectly fine if you ask me, the only problem I have with it is that the headphone connector on the front of the case makes strange noises, but I don't use it... It's got S/PDIF Optical in and outputs, line in and out and a front headphone port. If you want to upgrade you'd need a card that would fit in the Mac Pro and then have drivers for the OS too. The card you specify is a PCI card, that physically won't fit in the Mac Pro. It also only comes with Windows drivers, so it won't work with OSX.
Sound Card For Mac Pro 5 1
The Best Free Audio Drivers app downloads for Mac: USB Audio ASIO driver Digidesign CoreAudio Driver Apple Audio Volume Installer M-Audio FireWire 410. Dante Virtual Soundcard Supercharge your PC or Mac audio applications with Dante connectivity, delivering instant access to any audio devices on the network. Record, process and playout up to 64 bidirectional channels of pure, lossless audio. PC & Mac: Meet Dante Dante Virtual Soundcard turns your computer into a Dante-powered workstation, seamlessly integrating your PC …. Focusrite Scarlett 2i2 USB Recording Audio Interface. It would be just plain wrong not to mention. X Series External Multi-Channel USB DAC and Amp Sound Card “X” for Movies and Music with Cross-platform Connectivity — Elevate your home entertainment experience with multi-channel surround sound and our critically-acclaimed proprietary Super X-Fi technology in an external USB plug-and-play format that works with PC, Mac, and even gaming consoles like PlayStation 4, and Nintendo Switch. Sound card driver free download - Apple NVIDIA Driver, IOXperts 802.11b driver X, PC Card OS 8.5 Net Patch, and many more programs.