One of our team members (Pencioner) checked his HX-10 and said that FLEX was incompatible with the expansion bus connector. According to the document (your link) SVI-728's pinout should be compatible to HX-10's. I know that FLEX works with SVI-728's expansion bus. But according to the checks done by Pencioner it won't work with HX-10. I am baffled.
