Higher temperatures tend to lower the reliability of the drives. The thermal design of the enclosures for HDD-based DAS devices is important because hard drives can't withstand as high a temperature range as flash-based devices. Of course trying to replace the PCB is still an option.In addition to the performance numbers and value additions that have already been discussed, consumers also need to look at other factors like thermal performance and power consumption for external storage devices. Do you hear it spinnig normally, or does it beep, or click or anything like that? If does its pretty much toast. Since its now out of the case, connect it normally via the USB cable and put your ear to the drive. And all 3.5 external drives I've opened, have always had either the regular IDE or SATA connections. I'm guessing the power requirements of the 3.5 would prevent this from being viable. Is this typical of only the external 2.5" drives and not the 3.5" drives? I always figured the 3.5" drives were pretty standard, but I haven't had the need to ever crack any of them open. RE: WD MY PASSPORT 0740 USB DRIVE NOT FOUND goombawaho (MIS) 4 Sep 12 14:59 Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown. Ignorance is not necessarily Bliss, case in point: At the end if the USB interface still works, you may be able to at least place it on the donor drive of the PCB and get a new USB drive out of that. In any case, the only way to connect these drives directly to a PC, is to replace the PCB with a standard SATA one from a compatible drive. I've always speculated its a diagnostic port for use of the manufacturer only. However, I've never been able to find a cable that goes there. ![]() There seems to be an extra 12 pin connector to one side on some of the ones I've seen, but not all. I've seen a few of these external hard drives with the USB port as the only connector soldered directly onto the drive's PCB, without any other usable connector I've been scouring the internet for 2 hours looking for a workable solution can anyone here help? RE: WD MY PASSPORT 0740 USB DRIVE NOT FOUND goombawaho (MIS) 4 Sep 12 09:46 When the drive initially gets plugged in, the light blinks (never stops) and for minute I can hear a noise like its spinning or maybe trying to spin? I have to run out now on a call, I'll grab a power booster cord, but I don't think that will help. These two utilities don't list the drive either. ![]() I've tried the testdisc and EaseUS Partition Master Home Ed. I even tried a mac in the office next door. I tried plugging the drive into my Windows XP desktop (used several back and front USB ports) and it list under Device Manager, but no where else. I tried another USB cord and that made no difference. Trying to do anything here gives me an I/O error. ![]() I've tried both USB ports on my Dell Vostro 3550 Windows 7 圆4 and I can see the drive in the Device Manger list and in Disk Management it lists as Disk 0 Unknown Not Initialized. He has been using it for about 6 months and plugged it in last night and it no longer comes up. My son came to me yesterday with a WD My Passport 0740 USB Drive (p/n WDBACY5000ABK-01).
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