Multitester tested for voltage. This is an ORIGINAL Genuine HP FACTORY wall mount battery charger adapter voltage regulator, power supply, powersupply, inverter, adaptor with the following specs: AC input 120V and DC output: 32V 660mA. Round barrel connector with a positive center. Special heavy wrapping is provided to protect the prongs. S H in the contiguous USA is $4.(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 4 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 4 day drop-off time. Thankyou.