I am looking to upgrade some of my PC components as my current build is nearly 3 years old. My current build is listed below.

CPU: AMD FX-4100 3.6 GHz quad core
Mobo: Asus M5A88-V EVO ATX AM3+
Memory: 8GB (2 x 4GB) DDR3-1600
Storage: 1TB 7200RPM Hard drive
GPU: EVGA GeForce GTX 550 Ti 1GB
Case: Raidmax Smilodon Extreme ATX-612WEB ATX Mid Tower Case
PSU: Corsair Enthusiast 650W 80+ Bronze Certified ATX Power Supply
Optical Drive: Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer

I am looking to upudate my CPU, Mobo, Memory and GPU. The error I am getting from PC Part picker is this:

Asus Sabertooth 990FX R2.0 ATX AM3+ Motherboard has an onboard USB 3.0 header, but the Raidmax Smilodon Extreme ATX-612WEB ATX Mid Tower Case does not have front panel USB 3.0 ports. Two other potential motherboards I am looking at give me the same message. Would I have to buy a new case to update my motherboard?