I was planning on getting the new version iD4, but am now concerned about the USB 3.0 port in my 2013 MacBook Pro having enough juice to power it... The MacBook system report identifies a USB 3.0 bus, (BRCM20702 version), with 500mA available current, and the Extra Operating Current line is blank. The iD4 spec lists 900mA as the power requirement... I know that the Apple bus can provide extra power over one or more ports for some Apple devices, but nothing noted about other ones. So, I'm in a quadry -- order a MKII and find out myself if it works, or find a 1st generation USB 2.0 version w/o headaches. Has anyone tried running an iD4 MKII (or other 500-plus mA device) on a Mac similar to mine?