Multitester tested for voltage. This is a voltage Hayes power adapater powersupply for the SmartModem 1200 with an INPUT: 120VAC and OUTPUT: 13.5VAC 0.7A. Amperage can be higher but never lower. Please be sure you see a THREE PIN prong plug hole in the back of your modem. Photo is generic. Shape, size or color may differ from photo. Questions are encouraged. S H in the contiguous USA is $9.(insured shipping). Please see other interesting items by JGrit USPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 5 days of receiving cleared payment. How long it takes to deliver to your door is strictly within USPS control and not within the control of seller. Please leave 5 stars for seller 5 day drop-off time. Thankyou.