Happy new i2c everybody :P I have an LCD running on top of SMBUS and LCDPROC. I hated some cable running out of computer to LPT port, so I looked for alternatives. SMBUS is good way to connect LCD inside computer, so I made it for myself. Feel free to try out. Schematic, details and patches are here: http://no.spam.ee/~tonu/i2clcd.xhtml Ouch, again I reused my unapplied patch for pca9538. Now with pca9554 added (in your TODO for long time). T?nu