Multitester tested for voltage. Voltage regulator, power supply, powersupply, inverter, adaptor, adapter, transformer with the following:  INPUT: AC 100-127V and  OUTPUT:  DC 24V 1500mA. Round barrel connector with positive center. Power Supply for Compaq and HP Scanjet 7650, 7400, 7400c, 7450c, 7490C, 5500, 5500c, 5590, 5590p, 5570c, 5550, 5550C, 5530, 4500, 4500cxi, 4570, 4570c, 4570cv, 4850 series scanners.

Special heavy wrapping is provided to protect the prongs. S&H in the contiguous USA is $5.(insured shipping).
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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.