Hi! > Judging from patch 2/2, the PCF8574T is compatible with the PCF8574, the > only difference being the package. It makes no difference from a > software point of view. You are absolutely right. I simply thought that, since "PCF8574T" is written on the chip, this patch would make it easier for the user to identify the correct driver. Regards, Tóth János -- Ezt az e-mailt átvizsgálta az AVG AntiVirus szoftver. www.avg.com