For sale is the Power Media Dock I got with my Vaio Z.
It is the latest model with ATI 7670 and a BluRay Writer..
Specifications: VGP-PRZ20A Power Media Dock for Sony Vaio Z.
Bluray Writer, ATI 7670, USB 3.0, LAN, VGA, HDMI.
It will be faster than 2.0 anyway, but... If you really like backing up data, why not buy a dedicated solution? There are a few portable HDD with card reader built-in for on -the-go backup. Does your new laptop not have a card reader? Or are you using a CF card? Then maybe the laptop has an Express Card slot and you could use that for a reader? An easy solution might also be using your smartphone/ tablet and backup those photos using a card reader connected to one...