Multitester tested for voltage. This is a voltage EQUIVALENT power supply forZyXELmodems with AC input: 120VAC output: 9VAC 1000mA (aka: AC 9 voltsAC1.0 amp). Amps can be higher but never lower. Barrel (hollow center) type plug. Please check your device power requirements prior to purchase. Shape, size and color may differ from photo. Special heavy wrapping is provided to protect the prongs. S&H in the contiguous USA is $5.(insured shipping). Please see other interesting items by JGritUSPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 4 days of receiving cleared payment. How long it takes to deliver to your door is strictlywithinUSPS control and not within the control of seller. Please leave 5 stars for seller 4 day drop-off time. Thankyou.