This looks like it could be a nice docking station for Z's with USB hosting capabilities.
It's a USB 2.0 device with built in Ethernet, Keyboard & Mouse Ports, Serial & Parallel ports, and extra USB ports.
$49.99 today only (Friday. June 23rd) at Yugster.com
It looks like it normally goes for $85+
I don't know about drivers for all the devices, but I know that people have reported using most of those devices using only the drivers built into the latest kernels.
I don't own one, haven't tried one, and have never bought anything from this vendor.