Dell Optiplex 755 Adding second hard drive

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Dell Optiplex 755 Adding second hard drive

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I have a Dell Optiplex 755 and I'd like to add a second hard drive ( 160GB 3.5" SATA Hard Drive Western Digital WD1600AAJS) to have more space available since I think the stock 75GB isn't enough for me. So I'm wondering if I need a new power supply or additional data and/or power cables.

Thank you.

Verified Answer
  • The Mini-Tower has two positions for hard drives.  See Manual ........

    support.dell.com/.../mt_drive.htm

    The two hard drives positions are one next to each other.

    Yes, you will need to supply a SATA cable

All Replies
  • Hi Lettuceprayy,

    You need a data cable. That's about it.

    I'm really surprised your system came with only a 75GB drive. Are you sure that's right? Seems tiny.

  • Hi lettuceprayy,

    Welcome to the Community

    Please let us know what type of chassis you have, as this system model use to come with 4 different chassis type and of those 4, 2 of them have “Two 3.5-inch hard drive bays” and other 2 have “One 3.5-inch hard drive bay”.

    If you have two 3.5-inch hard drive bays then you will only need a data cable and an additional power connector should be there on your computer.

    Always glad to help.

    Thank you

    Aashish Sengar

    Social outreach Professional

    You can reach us at http://en.community.dell.com/

  • I have a mini-tower chassis. Is it one with the two hard drive bays? If it is, do I need a SATA data cable?

  • The Mini-Tower has two positions for hard drives.  See Manual ........

    support.dell.com/.../mt_drive.htm

    The two hard drives positions are one next to each other.

    Yes, you will need to supply a SATA cable

  • Just hard to believe the original drive is 75GB. Haven't had a drive that small since my Dimension 4100.

  • Thanks so much,

    I assume my hard drive was sold as an 80GB HD but HD manufacturers treat a GB as 1,000,000,000 bytes and not as the actual value 1,073,741,824, so we don't get the full capacity. :[

  • Glad to help.

    You're correct, but that's still a very small drive. For example, you would have no trouble finding a 1TB SATA drive for well under $100.

  • Yes, Mini- tower has two hard drive bays available and you will only a SATA data cable to connect a new hard drive.

    Please reply for any further assitance

    Thank you

    Aashish Sengar

    Social outreach Professional

    You can reach us at http://en.community.dell.com/

  • Hello, anybody still watching this thread?

    I just looked inside a 755 to add a second drive, and there does not seem to be a spare POWER connector for it, even though there is clearly room for the second drive, and an empty SATA connector on the MOBO.

    Am I missing something?

    --J