Question about SanMax 2.5'' EXTERNAL ENCLOSURE KIT (HD227U2) Drive Case

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USB Connection Issues

I have a SanMax HD-338-CB USB/Firewire External HD with a 160MB drive. Sometimes I have to reboot Windows XP pro 2 or 3 time before I see the drive using a USB 2.0 connection. I do not have this issue using the firewire connections. I don?t know if I have a problem with the SanMax or if it?s operator problems. Also, how large of a HD can be used and are firmware updates available. Thanks, Cat

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Re: USB Connection Issues

Windows XP (no service pack) can only use 137 GB MAXIMUM. If you have a drive connected to the pC with XP, you will not have any problem if the data stored is less than 137 GB. If you exceed this limit, the entire harddisk will be wiped-out because the system will overwite the file allocation table. This limitation was solved by Service Pack 1 for XP and Service pack 2 for windows2000

Posted on May 24, 2007

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Re: USB Connection Issues

Cat this is your earlier problem reworded - I can see now that this is a dual device. If you can use it that way in Firewire mode leave it at that. However - is it possible that this is a 'switchable mode device and you have not discovered the secret of how to. If there is anything like a manual with this check it thoroughly or get into the makers tech support team

Posted on May 24, 2007

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SOURCE: USB Connection Problems

Jackboy, that wasn't a very good answer and it is apparent you are unfamiliar with the SanMax HD-338 External Hard Drive Case which has BOTH USB and Firewire connectors.

I don't have the answer to Redfire's question, but at least we need to understand her situation. She's not getting USB and Firewire confused. She's simply saying that when connected as USB Windows XP has trouble "seeing" the drive and when using her firewire connection off of the external case, she doesn't have this problem and is wondering why.

Jim B.

Posted on Nov 12, 2007

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Windows Vista does not see drive in my computer


Okay , so there are some steps to figure out what is wrong with your external.

Firstly , if your computer makes a sound when you plug in your external , go to Start-Control Panel-Administrative Tools-Computer Management-Disk Management , and see if your external drive is listed here with your local drives. If it is listed , right click on the drive and change the drive letter to make it appear in "my computer".

If your drive does not make a connection sound when connecting to your computer and also does not show up , please follow the next step.

Remove the hard drive from the casing if possible and install it in your computer case or another external case.If the drive works , the problem is with the casing and you can ignore the drive.

Now , if the problem is with the casing , there are still 3 possibilities.

  1. The USB cable between the drive and the computer may be damaged.
  2. The circuit board which connects your drive to the interface of the external may be blown.
  3. The power supply (if applicable) may have a blown transformer.
The latter is the easiest to diagnose , does your external light up at all when you plug in the power? If not , then this is probably your problem. On the bottom of the adapter is a label which you will be able to use to have a new adapter made at your local electronics shop and this will cost about $30 max. They will also be able to test the adapter with a clamp meter to see if this is really the problem and this should be free.

The second component you want to test is the USB cable. If you have a printer , swop out the cables and see if your printer functions normally. Most externals use the same connector so you should be able to test it in this manner. If the cable works go on to the last step. If the cable is defective , replace it with a new one which you can find for about $10 at most electronics and chain stores.

The last component to test is the circuit board. This is a bit of a grey zone as you probably won't be able to spot the blown component unless it failed really badly. With the casing already opened , locate the external's circuit board and check to see if you have any blackened components or fluids leaking from some components. If all the other components of the external worked perfectly , then this is the faulty part. It is not really economical to replace the circuit as most of the time it is out of production by the time you need to replace it and it still costs a lot even if it is available so if your drive is working perfectly when connected via sata or IDE on your computer , the best is to buy a new casing and place your old drive in the new casing.

A casing costs about $50 and you could get it at most tech shops and big chain stores like Best Buy.

I hope this solves your problem and please reply if you need more help.

Kind Regards

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You say have a SanMax HD-338-CB USB/Firewire External HD with a 160MB drive. You then say sometimes I have to reboot Windows XP pro 2 or 3 time before I see the drive using a USB 2.0 connection. Fire wire is a different system with a different connector style- so it should not be in a USB port or a USB connector should not be in a Firewire device. Get you device and connections sorted The desktop display simply puts up a device it will not differentiate which USB or Firewire

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