External Hard drive Power Requirement Tags: Hard Drives Western Digital Power External Hard Drive Storage Last response: May 17, 2011 8:49 PM in Storage Share palldat May 16, 2011 5:09:28 PM Hello, I was wondering how you determine how much power is needed to run a WD Passport SE 750GB hard drive. It gets power from the usb port More about : external hard drive power requirement Hawkeye22 a c 284 G Storage May 16, 2011 6:01:25 PM USB 2.0 can only put out 5V at 500mA. Anything higher will require a power brick for the drive. analytic May 17, 2011 5:58:09 PM Or a cable with 2 USB connectors (1Amp at 5V). Can't find your answer ? Ask ! Get the answer ko888 a b G Storage May 17, 2011 8:49:00 PM palldat said:Hello, I was wondering how you determine how much power is needed to run a WD Passport SE 750GB hard drive. It gets power from the usb port Since it uses a WD Scorpio Blue 750 GB Mobile Hard Drive: Electrical Specifications +5 VDC Current Requirements Read/Write : 500 mA (2.5 Watts) Idle : 400 mA (2.0 Watts) Standby : 50 mA (0.25 Watts) Sleep : 20 mA (0.1 Watts) Can't find your answer ? Ask ! Publish Related resources: Forum1TB external hard drive with no power cord required (runs on USB 2.0) ForumExternal hard drive not getting power Forum1TB external hard drive with no power supply, USb 3/seagate /western digital/,ex ForumWd 500gb external hard drive wrong power supply ForumWhy after changing the power supply to an external hard drive will the light com ForumUsing different power cords on external hard drive ForumUse a notebook ac adapter as power supply for external usb hard drive ? ForumExternal hard drive power adapter ForumExternal hard drive power cord ForumHow to use laptop hard drive as a external usb drive ForumExternal hard drive power cable ForumDoes SATA external hard drive work with usb connection ForumMY COMPUTER STOPS DETECTING THE EXTERNAL HARD DRIVE ..PLEASE HELP! ForumExternal USB Hard Drive problems ForumMy computer is saying that there is a hard disk failure ForumSlow hard drive Forum[Solved] Phantom Hard Drive Usage Forum[Solved] Hard Drives ForumHard drive shows in BIOS and Windows, but won't get data ForumNo matter what i do still saves to one hard drive? More resources Read discussions in other Storage categories Hard Drives DVD Drives DVD Writers Optical Media Flash Media NAS/RAID SSD Western Digital !