SIIG releases the JU-000012-S1 USB-to-ExpressCard adapter

SIIG releases a USB to ExpressCard adapter. It can be used for USB based ExpressCards only (no PCIExpress ones). It has a maximum transfer rate of 480Mbps, supports hot swapping and works on almost every windows version and Mac OS X 10.3+ without drivers.

The unit costs 32$. 

Read more here (Engadget)