Multitester tested for voltage. This is a voltage EQUIVALENT wall mount battery charger adapter voltage regulator, power supply, powersupply, inverter, adaptor for many DELL brand MINI laptops with the following specs: AC input 120V and DC output: 19V 1.58A. Amperage may be higher, but never lower. Round barrel connector with a positive center. Please determine compatibility to your device before purchase. Questions are encouraged. 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.