"USB 3.0 card success with Mac Pro 5,1
I got the itch to visit my local MicroCenter and found a Vantec 4-Port USB 3.0 PCI-E card for $23.

It came with the SATA power to molex adapter. Since I don't have a 4th drive in my Mac Pro it was convenient to hook this card up with that power port. (Were you already using the 2nd Optical Drive bay?) I had to break off one of the tabs on the SATA power connector, but it fit nicely.

MacOS 10.13 beta build 17B46a recognizes the card fine, and I have an older Hitachi Touro 4TB USB 3 drive hooked up to it for time machine backups. I get 158MB/s write and 160MB/s read off that drive and the USB 3.0 card.

I can't speak to how reliable it will be but I was certainly surprised with the ease and performance of the card.
Cheers, John W."

"Are there any updates on Sleep support with the USB card?
I've installed a USB 3.0 card in my Mac Pro 3,1 however if any USB device is attached the machine will immediately wake when put to sleep. This has influenced which devices I connect to which ports.
If this card doesn't share this problem I'd love to know.
-Craig"

What card brand/model and OS X version are you using?
Can you unmount the USB device before putting the Mac Pro to sleep? (If so does that help?)

Request for Feedback on Mac Pro Tower USB 3.0 PCIe cards:
If you're using a PCIe USB 3.0 card OK with your Mac Pro, let me know the details - Mac Pro model, USB 3.0 card model, any drivers required, any sleep or performance issues, etc. (Send reports to news at xlr8yourmac.com)

The Tips page has previous reports on PCI USB 3.0 and Combo USB 3.0/eSATA cards.
 

• Developer News - Beta 4 of macOS 10.13.2, iOS 11.2, tvOS 11.2, watchOS 4.2.
  
  
• DiRT Rally for macOS available (Feral store, coming soon to Mac App store)
• Mac system requirements for "DiRT Rally" game (feral interactive)
  
  
• Johny Srouji talks chip design at Apple (seeking alpha)
  
  
• Security Updates for Adobe Flash Player, Photoshop CC, Adobe Connect, InDesign, Adobe Digital Editions, and Reader & Acrobat (adobe bulletins)
  
  
• Microsoft Office 2016 for Mac v15.40.0 (see release notes)
  
  
• iOS 11.1.2 release notes
  Includes bug fixes for iPhone X. This update:
  - Fixes an issue where the iPhone X screen becomes temporarily unresponsive
    to touch after a rapid temperature drop
  - Addresses an issue that could cause distortion in Live Photos and videos
    captured with iPhone X
  
  
• Can my Mac run this game? (aspyr kb)
  
  
• Aspyr games and macOS High Sierra (aspyr kb)
  
  
• $299.95 MekaMon Robot with AR capabilities (Apple Exclusive)

• About the security content of iOS 11.1.2
  - "iOS 11.1.2 includes the security content of iOS 11.1."
  
  
• Isolating issues in Mac OS X
  
  
• How to free up storage space on your Mac
  
  
• How to Move your data from a Windows PC to a Mac
  
  
• Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams
  
  
• iCloud Photo Library (FAQ)
  
  
• (How to) Use Photos on your Mac
  
  
• (How to) Use Face ID on iPhone X
  
  
• Get help with Face ID on your iPhone X
  
  
• About Face ID advanced technology
  (Apple also has a PDF Face ID Security Guide)
  
  
• (How to) Use the Files app on your iPhone, iPad, and iPod touch
  
  
• (How to) Restore your iPhone, iPad, or iPod touch from a backup

Page of How-To, Troubleshooting & Tips for Mac/OS X/iOS Users from Airplay to Thunderbolt.
 

• Seagate BarraCuda Pro 12TB HDD Review (anandtech)
  
  
• Netstor Releases Portable NVMe Drive (storagereview)
  
  
• Firefox 57.0 release notes
  
  
• Firefox ESR 52.5.0 release notes
  (Firefox ESR downloads here)
  
  
• Chrome 62.0.3202.94 stable channel update (google blog)