Titan QX-PC Clone
A clone of the Titan QX-PC card that provided secondary 8088 CPU allowing the QX-10 to run MS-DOS.
YM2149 Sound Card
A YM2149 based sound card for the Epson QX-10/16 computers. Also has an external header for connecting an MPU-401.
QX-10 Compact Flash Adapter
An expansion card for QX-10 systems that provides fixed storage via Compact Flash in True IDE mode.