said by telcodad:
Actually, in his LRC article about the IP-only XI3 box for the X1 platform (»www.lightreading.com/document.as ··· lr_cable), Jeff Baumgartner speculated about one possible use for its SD card slot:
And what's with that SD Card slot? The XI3 doesn't have an internal hard drive, so the slot could be used for memory expansion. But it's also plausible that Comcast could use an SD Card as a local, mini-DVR that could buffer a small amount of live TV programming for trick-play functions (pause, fast-forward, rewind, etc.). Advanced Digital Broadcast (ADB) toyed with the notion of using an SD Card as a "lite" DVR for a tru2way "set-back" box it showed off in 2010. (See Tru2way 'Phantom' Box Is a DVR Lightweight: »www.lightreading.com/document.as ··· lr_cable)
Looks like that use is not just speculation, given this statement in a press release from Entropic (»www.globenewswire.com/news-relea ··· ice.html
) on the use of their TSC188 chip in Humax's XI3 box:
The compact Humax device includes recording functionality. The DVR feature works in conjunction with the multi-tuner hybrid gateway server and the on-board SD Card lets the IP set-top-box stream and play back programming using the MoCA specification.