These are now using the pl2303X chips instead of the pl2303 and do not work.
Apparently, that red reset button does something particularly special. Further, neither rebooting from the UI nor yanking the power cord is sufficient. The docs that say the port is hot-swap are lying. WARNING: You MUST hit the red reset button for many DirecTV receivers to recognize USB-to-serial adapters. There are a few well known ones that are made with compatible chipsets (the PL-2303 comes to mind), but there are many more that do not work with any flavor of linux. WARNING: Not all USB to Serial port adapters are compatible with linux. Nearly all of them have the ability, although not directly advertised, to be controlled from an external device, such as a MythTV BackEnd. 16 Serial -> RJ45 (Pin to Wire) MappingĭirecTV supplies and has supplied a variety of set top boxes (referred to as "STB" from here on) to consumers.14 Mini RJ11 (RJ22 or 4P4C) to Serial Port mapping.13 Mini RJ11 (RJ22 or 4P4C) Port Pinout.12 Working around some missing functionality on the channel change script.10 Watch out for Xwindows using the serial port by default.8 Making Your Own Custom Cable (D10/RCA).2.1 Official USB to Serial Cable Support.