It all started when I ordered a cheap-o, online combo Flash Card Reader + Floppy Disk Drive to update my old ThinkCentre which had a normal, working 3.5 FDD that I use occasionally when I need to track down ancient files.
The drive arrived and I hooked it up. It fried two flash drives. I then got a replacement through Amazon. Hooked that one up. The flash drive worked, showed up with four mapped drive letter in windows, but the floppy drive would not accept a disk - the metal casing was visibly bent and so it wouldn't lock the in position. At some point my a: drive disappeared from the desktop.
At this point, with an extra one of these things sitting on my bench, I decided to take it apart. Turns out, the thing is made by taking a slim, laptop style 3.5 FDD, using a circuit board to remap the 20 pin ribbon header to a standard 34 pin floppy cable. Then they stack a card reader board in the extra space left by the thinner drive. The card reader has a 9 pin usb header, connected to a standard 9 carrier cable.
Well, the problem with the first drive was that the cable was not wired correctly. The top 4 pins were wired one way and the bottom 4 pins were ordered another way... Anyway, I rewired this cable, and put the thing in an HP tower. Both the floppy and the card reader worked. So I pull the "bad floppy" combo drive from my ThinkCentre, and put in the one I just fixed / tested in the HP. Once again, the memory card reader is working, but not the floppy drive. The A: disk is showing up in Windows XP after I restarted the machine, but when I try to click it, the system goes into a "not responding" state, and then issues an error that is either "A: is Unformatted" or "Error reading A:". Device manager shows no errors. So I pull the cheap, unbranded China drive and put in the original FDD, a quality Sony drive that came with the ThinkCentre. But it's not working either. I go into the BIOS, and the floppy is disabled, so I enable it, but it's still not working.
I take my Sony drive, hook it up to my HP, and it's working fine. Reads, writes, formats, etc.
I no longer have PC Dr. to run a diagnostic on my ThinkCentre... Lenovo apparently discontinued it. I can't figure out what happened. Maybe a case of ESD screwing up the floppy controller or the MB? But everything else seems to be working fine... it just doesn't add up.
So here's my ThinkCentre sitting there with an empty 3.5 bay and me scratching my head.
The drive arrived and I hooked it up. It fried two flash drives. I then got a replacement through Amazon. Hooked that one up. The flash drive worked, showed up with four mapped drive letter in windows, but the floppy drive would not accept a disk - the metal casing was visibly bent and so it wouldn't lock the in position. At some point my a: drive disappeared from the desktop.
At this point, with an extra one of these things sitting on my bench, I decided to take it apart. Turns out, the thing is made by taking a slim, laptop style 3.5 FDD, using a circuit board to remap the 20 pin ribbon header to a standard 34 pin floppy cable. Then they stack a card reader board in the extra space left by the thinner drive. The card reader has a 9 pin usb header, connected to a standard 9 carrier cable.
Well, the problem with the first drive was that the cable was not wired correctly. The top 4 pins were wired one way and the bottom 4 pins were ordered another way... Anyway, I rewired this cable, and put the thing in an HP tower. Both the floppy and the card reader worked. So I pull the "bad floppy" combo drive from my ThinkCentre, and put in the one I just fixed / tested in the HP. Once again, the memory card reader is working, but not the floppy drive. The A: disk is showing up in Windows XP after I restarted the machine, but when I try to click it, the system goes into a "not responding" state, and then issues an error that is either "A: is Unformatted" or "Error reading A:". Device manager shows no errors. So I pull the cheap, unbranded China drive and put in the original FDD, a quality Sony drive that came with the ThinkCentre. But it's not working either. I go into the BIOS, and the floppy is disabled, so I enable it, but it's still not working.
I take my Sony drive, hook it up to my HP, and it's working fine. Reads, writes, formats, etc.
I no longer have PC Dr. to run a diagnostic on my ThinkCentre... Lenovo apparently discontinued it. I can't figure out what happened. Maybe a case of ESD screwing up the floppy controller or the MB? But everything else seems to be working fine... it just doesn't add up.
So here's my ThinkCentre sitting there with an empty 3.5 bay and me scratching my head.