Forum... I thought it would be helpful to share my recent problems with the above card (Pretec part no. FAD008-P) with you. I was unable to get my card (including a straight-swap replacement) to work with my S4+ module. Soundbridge 1 refused to accept that there was a card in the module; Soundbridge 2.5.2 attempted to burn data to the card but no data was transferred. Error messages fluctuated between "CARD IS FLASH MEMORY. CANNOT STORE" and "CARD BANK IS ROM ONLY. CANNOT STORE". After an investigation by the supplier who provided me with the card, it turns out that Pretec has recently changed the specification of the card. Presumably it is no longer compatible with the S4+ (and, hence, other QS models)? I would strongly urge you to verify compatibility before ordering a third-party RAM card.
Owain Pedgley