AC Adapter 4 Q-See QC448-5 8 CH DVR with 500GB Hard Drive Installed Power Payless , AC adapters manufactured with the highest quality materials and include safeguard features against incorrect voltage, short circuit, internal overheating. 100% compatibility with the original. We focus on providing quality power products and excellent customer service , 30 Days Money Back Guarantee,Please contact us with any questions or concerns - we are here to help! (Phone service is available)