Just purchased an HB1000s - setup went perfectly and connected a 2.5inch usb-powered external 1TB drive which the unit identified and requested it be formatted. I did this and the unit was then able to record programmes which I watched later in the evening. However, on powering up the unit this morning it claims it cannot see a USB connected drive - unplugging and replugging the drive makes the unit recognise it again ! Does it matter which USB port is used ? Anyone else had this behaviour ?