1
vote
2answers
932 views

Why can I transfer only 35 MB/s to my USB 3.0 external hard disk?

I bought a Seagate Expansion portable disk (1 TB). I am using a Dell Inspiron 15R (5521) laptop which has 2 usb 3.0 ports. But when I transfer files to my above mentioned portable drive I do not get ...
8
votes
1answer
1k views

How to measure actual USB3 port speed?

Not all USB3 ports are created equal. I have a friend who develops embedded hardware that interfaces with USB chipsets. He told me that most USB chipsets that are slightly faster than USB2 (480 ...
1
vote
1answer
740 views

USB 3 stick in USB 2 port

If I plug a USB 3 stick (with 20/60MBps write/read speed) into a USB 2 port is it possible to get this speed (because USB 2 should be able to get 480Mbps = 60MBps)? I would assume that this speed ...
1
vote
0answers
1k views

Enabling super speed on USB 3 ports

I finally bought a USB 3 handy drive, hoping to take advantage of the speed of the USB 3 ports of my laptop (Dell Inspiron 15R 5520). The USB port is USB3 (blue inside). The Handy drive is a ...
2
votes
1answer
1k views

Slow USB3 under Linux

I have a problem with the speed of USB 3.0 under Linux. I'm testing with the following parts: "NEC Corporation uPD720200 USB 3.0 Host Controller" (pcie) "Pretec 240" USB 3.0 Card-Reader Sandisk ...
5
votes
2answers
12k views

How seriously does cable length affect USB 3.0 transfer speeds?

Recently I've been thinking of upgrading my computer with some USB 3.0 ports. However, the problem is my computer is some ways away from my desk so that would mean I would need a long cable, ...
32
votes
3answers
163k views

Speed comparison between USB 2.0, USB 3.0 and SATA and Firewire

Which is fast, faster, fastest? I would appreciate a slowest to fastest list including USB 2.0, USB 3.0, FireWire 400, FireWire 800 and eSata.