Pctv HD Pro Stick USB Hd Atsc Ntsc Clearqam Tuner System Requirements - Windows XP with SP2 or Windows Vista (32-bit), Intel Pentium 4 2.4 GHz, Pentium M 1.3 GHz or AMD Athlon 64 processor Memory : 256MB RAM Free USB 2.0 port Sound and graphics controller with support for DirectX 9 or higher 1GB free space, and DVD-ROM drive