This interface box allows you to hook up to the CABL1 ($30) and the TunerView and RD1 displays in order to datalog and monitor ALDL variables. Supported mask IDs include $8D and $59 as of 2/8/11.
Note: Does not allow direct datalogging to USB. However, this can be done using the TunerView/RD1 'daisy' chain mode to datalog to software via USB on the display device.
Additional note: This device essentially is a TTL-to-ALDL converter with built-in 5v regulator on a 4-pin cable. It has the RJ45 pinout compatible with the CABL1. 12v should be wired to ALDL connector via PIN G, pin 4 on the RJ45.