Buy from Amazon : br br iPower Security SCCMBO0002-500G 4 Channel 500GB HDD Full D1 DVR Security Surveillance System br br 4-Channel DVR with full real-time D1 resolution 500GB hard drive included br 4 - 850TVL cameras with up to 70 feet night vision br 4 60 pre-made cables available in black or white br 1 12V DC 2000mA Power Adaptor 110V-240V AC Input br Power Cord Lead DC 1 to 4