What Cable or Plug Do I Need for My External Hard Drive?

Just to clarify, if you're looking for a barrel connector, those come in different sizes, so be sure to get the right one for your device. The exact voltage usually depends on your specific model, so make sure to check that as well!

If you're talking about a round connector, then it sounds like you need a power adapter rather than a cable. Check your device for a sticker that lists the input voltage and amperage. Most likely, it's around 12V, 1.2-2.0A with a center positive connector. This is typical for Seagate drives. It's usually best to go with a power supply that can deliver a little more amperage than needed just to be safe, as long as the voltage and polarity match what’s on the device.

The top connection is for a power brick, and you'll need the model of your drive to find the correct voltage. The bottom one is a standard USB 3.0 cable, which is widely available. You can check out a specific example here: [USB 3.0 Cable](https://www.amazon.ca/Compatible-Toshiba-Seagate-Passport-External/dp/B0BB29DQFX/).

It sounds like you're looking for a USB 3.0 Micro-B cable. This is the type commonly found on external hard drives before USB-C became standard. Look for 'USB 3.0 Micro-B to USB-A' when shopping—these are usually labeled 'SuperSpeed' and the USB-A side will have a blue connector. Just be aware, this isn't a typical Micro-USB; it's got that extra section on it! You should be able to find one pretty easily—just search for 'USB 3.0 Micro-B external hard drive cable' on sites like Amazon. Expect to pay between €5 and €10.

Before you buy anything, make sure you're clear about what type of charger you need—searching for the exact device name along with 'replacement charger' can help point you in the right direction. You’ll want to get the voltage and current ratings too, like '2.5x20mm barrel charger 2A 19V', if applicable!