The recording function to an external hard drive functioned initially not the only function. A phone call (or email) to the hotline and an hour later the latest Sofware (2MB) was with me. According to the manufacturer towards me the software for the device has been approved by distributors (I bought the device from Amazon) deliberately ordered without this recording function, since the devices could thus be bought cheaper. Uploading of new software took over the rear-mounted USB port for about one minute. Now all functions are available. But what really blew me away was the quality of the recordings. I have a hard disk recorder of Panasonic. Due to the (analog) input and output to the TV is a difference from the original is here already to recognize. When shooting directly to an external hard drive, was definitely no difference - even in HD mode - determine. Really great !!! Timer recordings are easy to make. The only reason not to weed out the hard disk recorder, is (rarely with me) to burn recordings to DVD and thus play on other devices. Highly recommended!