Multitester tested for voltage. The ac POWER CORD is INCLUDED. Input: ac 120-127V Output: dc 31.5V / 3.17A. Genuine ORIGINAL factory Hewlett Packard HP Converter, voltage regulator, transformer, adapter, adaptor. Round barrel connector with a positive center. S&H in the contiguous USA is $7.(insured shipping). Please see other interesting products 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.