USB 3.0 flash drive on USB 2.0 port?

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killerman55320 Posted messages 57 Status Member -
Alliant - 18 May 2020 at 13:08

Hello everyone, quick question, is it possible to use a USB 3.0 drive on a USB 2.0 port?

8 answers

Answer 1 / 8

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approved by Jean-François Pillou
Anonymous user

Hi

In principle yes, but just like a USB 2.0 stick on a USB 1.0 port, the USB 3.0 stick will work at the speed of the port it is plugged into.
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356
1. kendrickxy
  
  False, when I transfer files to my USB 3.0 hard drive, the speed is incredible; in 4 minutes, I can transfer over 5 GB, whereas with my USB 2.0 flash drive, it takes 30 minutes (or more) to transfer 5 GB. So I don't believe it affects the speed. (Maybe it's due to my SSD ^^)
  
  0
2. Tranche
  
  Scarface72 is right...
  
  Your comparison kendrickxy doesn't make any sense. If your drive had been USB 2.0, it's very likely that the transfer rate would have been higher than your USB stick.
  
  I have a hard drive that is USB 3.0, and when I connect it to a USB 3.0 port, I assure you that the speed is MUCH higher than what I get when the same drive is connected to a USB 2.0 port (on the same PC).
  
  So USB 3.0 is backward compatible with USB 2.0 with the transfer ceiling being the capability of the USB 2.0 port AND the device connected to it. A USB 3.0 device does not necessarily mean it can reach the maximum allowed speed. If its maximum speed is not higher than that of USB 2.0, then the transfer rates should be very similar.
  
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Answer 2 / 8
killerman55320 Posted messages 57 Status Member 55

Ok, but can a USB 2.0 flash drive work on a USB 3.0 port? (normally not, it's a bit like putting a PS2 game in a PS3?)
35
1. Anonymous user
  
  You can definitely put SATA 3 drives on SATA 2 ports...
  
  Why not a USB 2.0 flash drive on a USB 3.0 port? It will operate at USB 2.0 speed, that's all...
  
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2. interccuteur Posted messages 99 Status Member 9
  
  Normal =D And certain PS2 games work on PS3 as far as I know.
  
  0
3. Anonymous user
  
  some PS2 games work on PS3 as far as I know <= unless I'm mistaken, all PS1 and PS2 games work on PS3...
  
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4. interccuteur Posted messages 99 Status Member 9
  
  No =D A PS2 FIFA game does not recognize the CD on PS3.
  
  0
5. Anonymous user
  
  Ah well, not all of them... For PS1 on PS2 it worked though... ^^
  
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Answer 3 / 8
Fred

Hi

The problem is that this key model does not plug into a SINGLE USB 2.0 port, but you need to use TWO adjacent USB ports with the provided adapter.

Fred
11
1. Anonymous user
  
  Oh okay, I didn't understand that like that ;-)
  
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Answer 4 / 8
killerman55320 Posted messages 57 Status Member 55

Oh that's cool, I didn't know, thanks everyone!
11
1. interccuteur Posted messages 99 Status Member 9
  
  You're welcome
  
  0
2. Magister
  
  You're welcome.
  
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Answer 5 / 8
JIGAMOS Posted messages 3 Status Member 17

The hard drives are formatted in NTFS, a format that is not readable by the PS3 because it only supports FAT32 (file size less than 4 GB).
9
1. jps
  
  You can find very old 8 GB hard drives at the dump!! All you need to do is format it to FAT32 by making 2 partitions of 4 and there you go, inexpensive and EASY §§
  
  0
2. Anonymous user
  
  And above all completely useless… You can't store files larger than 4GB on a hard drive formatted in FAT32; we never said we were limited to a 4GB partition size...
  
  0
3. Wagen
  
  The FAT format goes up to 64GB --'
  
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Answer 6 / 8
Fred

Hi

I just received my 32 GB USB 3.0 flash drive
I'm going to return it for a refund.
Indeed, it is not specified that on a USB 2.0 interface, you have to connect it (this model from this brand, I don't know if I can name it here) with a double USB adapter, which doubles the bulk of the
drive.

The transfer rates are quite good, though, around 23 to 25 MB/s (30 MB/s advertised)
8
1. Anonymous user
  
  Huh? What's the problem?
  
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Answer 7 / 8
matehou Posted messages 23 Status Member 7

Hello everyone,

This topic is getting old, but I'm giving it a shot anyway =)

I have an external hard drive with USB 3.0 that is backward compatible with 2.0, and my PS3 does not recognize this HDD. Do you think that by buying a Y-type USB 3.0 cable (with dual USB connectors on one side and USB 3.0 on the other), it would recognize the hard drive?

Thanks in advance

(My hard drive is a Buffalo 500GB with USB 3.0)
6
1. Gabi45
  
  Know that I have an LG 500GB hard drive purchased in 2010 that originally used a double USB 2.0 cable: you need to use 2 USB ports for it to be operational: it doubles the data transmission speed. I tested it on my PS3: it doesn't work...
  
  0
2. jps
  
  you make a 4 GB partition formatted in FAT32 and it works, I did it for my grandsons
  
  0
3. moi meme
  
  Les disques durs en FAT32 sont très rares, et la PS3 ne prend pas en charge les disques durs de plus de 500 Go en ce qui concerne la dernière et l'avant-dernière version de la PS3.
  
  0
4. colegos
  
  The USB Y adapter does not change the speed, it is just to double the power supply of the device (generally, a port is limited to 500mA at 5V, which is 2.5W; devices requiring more must connect to 2 ports or have an external power supply).
  
  0
5. CompuSor
  
  It is possible to plug a USB 2 flash drive into a USB 3 port and vice versa, to plug a USB 3 flash drive into a USB 2 port.
  
  The only limitation is that if you plug the USB 3 flash drive into a USB 2 port, its speed will be limited to a maximum of 25 MB/s, regardless of the speed of your drive at its lowest. For information, only good quality USB 2 drives exceed this speed. If you have an excellent USB 2 drive (the best can reach 50 MB/s), its speed will be limited.
  
  For reference, the maximum speed of USB 2 is 60 MB/s while that of USB 3 is 500 MB/s.
  
  The best USB 3 drives can reach 230 MB/s (read) [140 MB/s write] (which will see their speed limited to 25 MB/s [R & W] on a USB 2 port).
  
  The speed of standard USB 2 drives was around +/- 15 MB/s on average (the worst 2 to 3 MB/s) while the average speed of USB 3 drives is around +/- 30 MB/s (the worst are 10 MB/s).
  
  So, as far as standard USB drives are concerned, USB 3 drives often have a speed superior to that of USB 2.
  
  In conclusion, do not confuse the maximum speed of the port (and its limitations) with the speed of the USB drive itself. If you have a poor quality drive, its speed will be mediocre even on a USB 2 port... it is better to have a good USB 2 drive than a bad USB 3... just as it is better to have a standard USB 3 drive (average) than a standard USB drive (average).
  
  The limitations of USB 2 drives do not apply to USB 2 hard drives. The average speed of a conventional hard drive (SATA) is around 50 MB/s. Therefore, a hard drive can exceed 25 MB/s irrespective of the port (to recall, it cannot exceed the speed of the port itself...). The only problem is that there aren't many hard drives exceeding 30 MB/s. Only the Velociraptor (WD) reaches 150 MB/s.
  
  The new SSHD drives (classic hard drives with an SSD cache) partially overcome these limitations.
  
  The conventional speed of SSDs is around 400 to 500 MB/s. The new mSATA & M.2 SATA or PCI Express chips can reach 2000 MB/s. The only drawback is the very limited lifespan of SSDs.
  
  The new ReRAM memory currently in production, which will not be available for another 1 to 2 years, is expected to multiply lifespan by 10 while reducing access times compared to SSDs.
  
  For reference, the retention time of data in an SSD barely exceeds 1 or 2 years (without the drive being plugged in for data refreshing). In contrast, the retention time of data in ReRAM memory promises to be around a decade.
  
  Therefore, an SSD or a USB drive (similar technology) is a very poor system for long-term backups.
  
  Regards.
  
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Answer 8 / 8
interccuteur Posted messages 99 Status Member 9

I think that if it's the same size, yes.
5
1. Magister
  
  If it's CMB xD
  
  0

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