I’m frustrated

BX5 D2 Monitor Hum

Just purchased a pair of BX5 D2 monitors and they produce a constant low level hum. The hum is produced if there are audio inputs connected or not. Also, I can hear a higher pitched sound whenever i move my mouse around or as web pages load in Chrome.

Connected the monitors via 3.5mm stereo to XLR cable.
All components are plugged into an APC UPS(PC, and monitors)

ASUS Rampage Hero VI
i7 4770k
32 GB ram @ 2400 MHz
Sound Blaster Z
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