This item is a custom made meade autoguider interface. It emulates a meade apm 909 module, basically it has an st4 input and and the output plugs into the aux port. It allows you to autoguide with any ccd with a st4 output or with a shoestring gpusb.
This emulater does not support reticle and focuser control, unlike the the now discontinued 909 module.
I have used this with my lxd75 clone and works with the lx90 also, pretty much works with anything with a meade 497 handset.
