I'm using a generic adapter from monoprice that worked flawlessly on my old directv box. I got a new HR24, plugged the usb into the back and it worked for a few hours then stopped responding to my URC remote. Reset it and it worked again. Did this every couple hours so I swapped the USB to the front port where it worked flawlessly for about 2 months. Then the front port started acting up. I figured it was the receiver so I called DTV and got them to send a new one. Now the new one is doing it. Anyone else have this issue? I'm not sure if I'm using a null cable or not. I plugged it in and it worked so I assumed it was correct. Would it work at all if it were wrong? Do you think it could be the adapter gone bad? I'm running 9600, 8, N, 1.

Isn't there a list of adapters that work? All do not. I know the II gear GUC232A works and it recommended. I had trouble with another low priced one I bought.

i've had zero issues with these el cheapo model.  I've probably used around 50 of them so far.


[Link: mcmelectronics.com]

Would it work at all with the wrong cable, null vs. straight through?

no

Sounds like a bad serial adapter then, but if it is, I don't understand why a red button reset fixes it. Seems like I'd have to unplug the reciever and plug it back in. Oh well, I'll get an IOgear and report back. I have read about an approved list? Where can I find this? DirecTv tells me the port is unsupported and that if it breaks they will not cover it because they know Im using the USB port.

here are the models that DirecTV recommends:
IOGEAR GUC232A

My setup - HR24-200 sending commands via URC MSC-400. New adapter, same result. Is it possible this is a firmware issue? I have the latest version. I'm thinking about rolling it back to see what happens. What exactly occurs when you have an incompatible USB to Serial adapter? Nothing works at all, or problems as I'm experiencing? Something else I've been noticing... everytime I do a red buttton reset, it crashes the wireless on my router!?!??! I really don't get that part. I don't even have the HR24 RJ45 to the router. I am, however, using the whole home MOCA thingee that they gave me.

FYI... I tried the cheap adapters from monoprice, part # 2067 and 2276. They worked flawless on my HR-21. Just not on the HR-24 and H-24. They would work then stop every couple hours or days if I was lucky. So I finally bought the IOgear adapter and it has worked perfect ever since.

I've used 4 or 5 of these on HR24's without any issues. I've used tons of these over the years and never had one fail.

[Link: sewelldirect.com]

-Shane

By "these" do you mean the IOGear adapters, or the cheap monoprice adapters? Still no issues?

I am using Dynex™ DX-UBDB9I 16" USB PDA/Serial Adapter Cable's with my HR22-100's in conjunction with my Pronto TSU9600 remotes and RFX9600 extenders. Have experienced no issues to date. Recently forced the new HD Guide to come down for each DVR as well. Still smooth sailing.