Dave-the ChannelMaster is for sure a re-badged Echostar 610 offered in the UK, but with US tuners.
The Echostar offers 500GB of internal storage, so the cutout in the PCB is a surely there to clear a 2.5 inch HDD or SSD.
Can you tell us what happens if you connect 2 hard drives to the DVR either through a USB hub or to each of the 2 USB ports on the backside of the unit?
Also, can you remotely mount the hard drive from your PC-in other words doest the CM expose the partitions as SMB/NFS shares?
Yes, the cutout is for 2.5" HDD; need populate a SATA socket, a few capacitors and one resistor to check if the J3 SATA is supporting in FW 101R.
I'll try to connect two drives later when I'll finish HW assessment.
Edited by P Smith - 1/9/14 at 9:37pm