The Sony SBAC-US10 USB Reader/Writer supports those with PCs not equipped with the Express Card slot. The SBAC-US10 can be connected to a Windows PC or a Macintosh via USB interface. Since this connection is made as "Mass Storage Class", no special driver installation is required. DC power must be provided using the supplied AC adaptor. The SBAC-US10 has been replaced by the SBAC-US20 USB 3.0 SxS Card Reader.