I understand that this uses one controller. Does that mean that full speed is divided between the devices plugged in to it? ie: 2 drives=2.5gbps/ea?
1143384
The block diagram is here - http://via-labs.com/en/products/vl805/ as is the description. I think it's fair to say that there is 4:1 subscription on the lane without a thorough test of throughput using multiple SS devices, so your assumption is most like correct - 2 drives = 2.5gbps/ea. The over-subscription really comes into play at the SS Port Route/XHCI level, if there were multiple XHCI's to multiple ports I would be more inclined to say that there is no/less blocking, but there appears to be 4:1 in this case.
1009538
In short, no. USB as a protocol supports far more devices through a single port than you can physically put on this hub. And, because of how the data is packaged and transmitted, it all moves at the same speed, regardless of the number of sources. For example, I have 3 devices (a wireless mouse, a printer and an external HardDrive) running through mine, and they all perform perfectly.
1953718
I believe all 4 ports work at once. The reason I say that is: My card always tries to enumerate all 4, and, because only the 2 eSATA are in use, I get a 30 second delay every boot.
518451
I do believe that you need both cables to get all 8 drives. I think it is 4 per but I have not tested as I only have 4 drives at this time.
466450
I have 8 4tb drives running a raid 5 for my media server with no issues. Transfer rate is 6gb/s. Read and write would be a combination of your drives and controller but more your drives then the controller. But flashpoint is right. If you need performance then you will need to go high endon the controller. But I honestly can't picture the need for something better
633885
Identical devices should give the same performance whether they are USB powered or AC adapter powered. I think that if you have multiple storage devices attached to the PC and the performance seems slow, it would have to do with your mobo and not because of the USB attached storage device. This drive does not have an option for AC adapter power. USB is the only way to go.
2110249
MANUFACTURER ANSWER:Thanks for posting your question here! No, Plugable USB 2.0 2-Port High Speed Ultra Compact Hub/Splitter (480 Mbit/s, USB 2.0 Windows, Linux, OS X, Chrome OS) is a bus powered hub and is not expected to work for your intended setup. We have had other customers who got this product after reading http://blog.jdslabs.com/?p=838 and were disappointed when it did not work.Hope the above information helps! If you need any additional information, please do feel free to shoot us an email at support@plugable.com. We are here to help!Thanks!Regards, Roze Plugable Technologies MANUFACTURER ANSWER:Thanks for posting your question here! No, Plugable USB 2.0 2-Port High Speed Ultra Compact Hub/Splitter (480 Mbit/s, USB 2.0 Windows, Linux, OS X, Chrome OS) is a bus powered hub and is not expected to work for your intended setup. We have had other customers who got this product after reading http://blog.jdslabs.com/?p=838 and were disappointed when it did not work.Hope the above information helps! If you need any additional information, please do feel free to shoot us an email at... » Read More MANUFACTURER ANSWER:Thanks for posting your question here! No, Plugable USB 2.0 2-Port High Speed Ultra Compact Hub/Splitter (480 Mbit/s, USB 2.0 Windows, Linux, OS X, Chrome OS) is a bus powered hub and is not expected to work for your intended setup. We have had other customers who got this product after reading http://blog.jdslabs.com/?p=838 and were disappointed when it did not work.Hope the above information helps! If you need any additional information, please do feel free to shoot us an email at support@plugable.com. We are here to help!Thanks!Regards, Roze Plugable Technologies « Show Less
475285
The interface between the drive and the disk controller is SATA III and can run at a maximum speed of 6 billion bits per second. This is approximately 750 million bytes per second. Older SATA II controllers are capable of 3 billion bits per second, or 375 million bytes per second. Why is this important? Because this particular drive can do 520 million bytes per second, so the drive cannot run at full speed on a SATA II controller. It will work, but it will be slower. It must be used on a SATA III controller to allow the drive to run at full speed.Please note your CPU, bus and motherboard must also be fast enough to get this speed. Putting a cheap SATA III controller in an old computer won't do it. The interface between the drive and the disk controller is SATA III and can run at a maximum speed of 6 billion bits per second. This is approximately 750 million bytes per second. Older SATA II controllers are capable of 3 billion bits per second, or 375 million bytes per second. Why is this important? Because this particular drive can do 520 million bytes per second, so the drive cannot run at full speed on a SATA II controller. It will work, but it will be slower. It must be used on a SATA III controller to allow the drive to run at full speed.Please note your CPU, bus and... » Read More The interface between the drive and the disk controller is SATA III and can run at a maximum speed of 6 billion bits per second. This is approximately 750 million bytes per second. Older SATA II controllers are capable of 3 billion bits per second, or 375 million bytes per second. Why is this important? Because this particular drive can do 520 million bytes per second, so the drive cannot run at full speed on a SATA II controller. It will work, but it will be slower. It must be used on a SATA III controller to allow the drive to run at full speed.Please note your CPU, bus and motherboard must also be fast enough to get this speed. Putting a cheap SATA III controller in an old computer won't do it. « Show Less
1833581
I'm not a techie, but I'll try to explain the way it works. When you insert it into a USB slot, it asks for a password to Data Traveler. Once you enter the password, it creates 2 drives on Windows Explorer, for me. One drive shows the software (DTL) and another shows the information on the drive. I'm sure this didn't answer your question, but just wanted to explain.
2100640
I don't know. All I can find is this: Max. 5Gbps (USB 3.0), Max. 480Mbps (USB 2.0) & SATA 3Gbps
1650671
All I know is this. It is non-powered hub. Works for multiple flash drives *as many as three have worked at the same time for me*, but if you try external hard drives you will run into difficulty because there is insufficient power from a single USB port to run multiple devices that need more power. t
210065
I use mine as an extender from my PC to a 2.0 hub. All 2.0 devices connected share the same bandwidth. If you have a 1.1 device it will still operate but all devices will see decreased speed and performance. Best to connect direct to a PC and replace any 1.1 cables.
1404145
I do not know--this was so unreliable I have stopped using it. It did not matter what drives I used--none would stay connected. Also, realize you can only use one at a time.
2020842
One drive-likely no problem. You could try attaching 2 drives and might be fine, I am not sure. Again, to be safe, buy a "powered"hub.
1313561
I am not really sure. The cable is meant to be used as a way to boost the output from a pc that only has USB2 to USB3 capacity but utilizing 2 USB ports at the same time. Though I suppose that you could use the cable on 2 separate devises, if they were close enough together or you had expansion cables, but the input would have to still be one at a time. This is because, at least to my knowledge, most if not all USB devises are not setup to act like data switch to control bottlenecking. But you can always try; it will either work or it won't so no harm no foul.
97229
I've had no issues with the speed of the unit. It really depends on the drives you use.
1079699
1, yes. if you power a HD of the 5V USB, it will run at about 5200RPM like a laptop HD. This will slow down your transfer rate. 2. I don't believe this should slow down other USB devices more than normal. Only one device can be accessed at a time anyway,but It all happens so fast you wont notice. 3. Depending on Seagate, normally the enclosure should see it has 12V and not need any power from the USB. Unless your are hanging 40 USB devices off your PC, there should be no power issues with other devices.