Eurocom Racer 4W - Manual (Page 214)

Modules
7 - 20 PC Camera Module
7
Video File Size
Note that capturing high resolution video files requires a substantial amount of disk
space for each file. After recording video, check the video file size (right-click the
file and select Properties) and the remaining free space on your hard disk (go to My
Computer, right-click the hard disk, and select Properties). If necessary you can
remove the recorded video file to a removable medium e.g. CD, DVD or USB Flash
drive.
Note that the Windows 8.1 system requires a minimum of 16GB (32-bit) or 20GB
(64-bit) of free space on the C: drive system partition. In order to prevent system
problems it is recommended that you move any large sized captured video file to a
location other than the C: drive.