PowerSupply is included and multitested for voltage. When the power is plugged in the LED light comes on. SpeedStream modemincludes all cables shown in product photo (color may vary). Don't rent from your ISP. Your own modem will pay for itself! S&H in the contiguous USA is $6.00.(insured shipping).Please see other interesting products by JGritPlease be sure you are computer software ready and understand the use of this device. My guarantee by repair or exchange does not extend to your computer, software, ISP, or cable company (who are only interested in leasing you a modem and not making an existing modem work on their system).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.