As I understand it, only the M1 supports the Desktop client for PC or Mac?
It's the other way around. ALL the Slingboxes, including the 350, can be viewed on any player, including all the browsers. For some reason Sling have made the M1 incompatible with everything on the PC so you are forced to use the Desktop standalone client.
Does the client support recording of streams to the hard drive of the PC or Mac for offline viewing later? Or do the models which only stream through the web browser allow saving of streams to the HDD?
Nothing in the Slingbox system supports recording. It is assumed you do that on your Tivo.
How does the infrared work with Tivo Roamios which are using the RF for remote control?
Would I need to switch the Tivo to use infrared instead?
Yes, the Slingbox supports ONLY IR. Sling don't support the Roamio yet but I built a Custom Remote for it at
In fact, did you not do a Forum Search for 'Roamio' before posting ?