After avoiding questions for the past week about her reliance on a private email system during her time as secretary of state, Hillary Clinton finally came up with an explanation.

Clinton argued that the reason why she maintained a private server for her email was merely about "convenience" because she didn't want to carry around two devices when she traveled — one for work email, one for personal email.

But on Feb. 24, in a question and answer session at a Silicon Valley event, Hillary Clinton was asked by Kara Swisher, "iPhone or Android?" and responded "iPhone," before pausing and then adding, "In full disclosure ... and a Blackberry."

A video of the answer, flagged by GOP opposition research firm America Rising, is from theWatermark Silicon Valley Conference for Women, cuts off after 18 seconds.

But the full video is even worse for Clinton.

In it, she elaborates: "There are reasons when you start out in Washington on a Blackberry you stay on it in many instances. But it's also — I don't know, I don't throw anything away. I'm like two steps short of a hoarder. So I have an iPad, a mini iPad, an iPhone and a Blackberry."

So somehow, within about two weeks, Clinton went from describing herself as a borderline hoarder who has four different devices to somebody who was so concerned with convenience that she used a private email and server for all of her official business in a major Cabinet post.