IDE Hard disc's compatibility

I have a couple old Asus TH7II P4 systems that I've had shelved for the past 4yrs. Not sure what was wrong with them exactly. But the hard drives were removed.

Since they are IDE. What harddrives can I put in them? There are some ATA/300 drives on sale at Fry's today I'm wondering if that would work?
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More about hard disc compatibility
  1. You need to open them up first and see if they support PATA (44pin) or SATA. The 300 is a SATA drive....
  2. Good point. IDE drives came in ATA/33, /66, /100, /133. Not 150 or 300 - those numbers are associated with first-generation SATA and SATA II. So make sure what ports you have.

    The board is from Abit, not ASUS. See here:

    The specs clearly say it has two IDE ports supporting up to 4 ATA100 devices, but no mention of SATA. How many are in there already? Space to connect one more? Review how to set Master and Slave jumpers and connect data ribbon cables. Make sure you check whether this board's BIOS supports "48-bit LBA" necessary to use HDD's over 137 GB.

    Be aware I believe Abit got out of the mobo business, although they are still operating in many other products and their website for support works. Just not sure how much more support they can provide beyond the website.
  3. Thanks to both. Yes Abit not Asus and yes ATA/100, no SATA. Is an ATA 300 backwards compatible with ATA/100?
  4. Best answer
    Near as I can tell, there is no ATA 300 spec for hard drives. ATA 300 does show as a spec for air freight packaging. What you may have run into is "Serial ATA 300", which is another way of writing "SATA 300", also called "SATA II". This is the name for the second-generation version of SATA now in wide use (SATA 3 is just emerging), and NOT connected to any PATA (IDE) drive system.

    So look closely - if the word "Serial" is before "ATA 300" they clearly are talking about SATA drives, not older IDE systems. And if it's not, read all the details carefully to be sure the unit is IDE, because the phrase "ATA 300" is not a common name for any drive type.

    To get closer to your question, since your board has ONLY IDE (PATA) ports for hard drives, you will be looking for an IDE HDD type. And yes, they all had backwards compatibility. For example, an ATA133-capable drive certainly will work with your mobo's controller that supports up to ATA100. It even works the other way - an old ATA-66 drive would also work with your mobo, just slower.
  5. If you buy a new drive you'll most likely get new cables, if not make sure you get 88 conductor cables or the drive will not operate higher than ATA33 no matter what speed it is capable of. On most drives you can leave your bios settings to auto and be alright. If your drive is larger than the bios supports you will get a dialog box on that.....
  6. Just go on ebay and search for PATA drives. You'll find some for pretty cheap, I've seen some 160 gigs ones for $30.
  7. Thanks. $30 sound about right for old IDE drive.
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