0
votes
2answers
85 views

USB 3.0 vs USB 2.0 for external Hard disks drives

I considered buying this HD USB 3.0. If the writing/reading speed of a HDD is, about, a hundred megabytes per second, it is worth it spending 15€ more for the transfer speed? Isn't it limited by the ...
1
vote
2answers
803 views

USB 3.0 Flash Drive slower than USB 2.0

I have just bought a USB Stick (Flash Drive) from Philips. 32GB USB 3.0. I had some other problems with my USB 3.0 Installation but now this is resovled. My USB 3.0 hub is now a 7 Port USB 3.0 Metall ...
1
vote
2answers
870 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 ...
0
votes
0answers
893 views

USB transfers very slow (kB/s range only)

However When plugging my USB 2.0 flash drive into the USB 3.0 port of one of my laptops running W8 Im only getting around 2.5 kB/s! sometimes if its a larger transfer it will trail of to nothing at ...
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
718 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 ...
0
votes
1answer
241 views

Test USB-connected SD card reader

I'm running a Linux system, so I'm asking a solution that can run on Linux, better if via terminal on a command line. I have a laptop with an integrated SD card reader, which is connected to ...
1
vote
2answers
2k views

Copy to USB drive stutters, is very slow

I am using Windows 8 64-bit and I have several USB thumbdrives. Whenever I try to copy files to any of them, the transfer starts out at about 17 MB/s, then goes to 19 MB/s, then drops to 5 MB/s and ...
0
votes
0answers
190 views

Change the speed of USB ports

I'm working with a custom made board that isn't USB 2.0 compliant. I was suggested by the manufacturer of the board to change my USB ports to "low speed mode" as I see frequent disconnects with the ...
1
vote
3answers
2k views

Why is downloading over USB so slow?

Why does downloading to flash memory over USB seem to be disastrously slower than to the hard drive? I was downloading a file from rapidshare.com using the Firefox addon DownThemAll. First I tried ...
0
votes
0answers
378 views

Ubuntu, Cable modem via USB, limited speed?

At first sorry for my english, I hope you will understand me. I have a Ubuntu 11.04 box. There is a cable modem (motorola sbg900) plugged in via USB. My bandwidth should be 8mbit download and 0,7mbit ...
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 ...
12
votes
8answers
71k views

What's the maximum typical speed possible with a USB2.0 drive?

I'm getting only 30MB/sec between my computer and a USB drive, despite the fact that USB 2.0 supports 480Mb/sec (or 60MB/sec) transfers. (Therefore, I'm only getting half the rated speed) Is there ...
11
votes
2answers
17k views

How do I get better USB transfer speeds in (X)ubuntu?

When I connect my USB 2.0 drive to Xubuntu and try to transfer large files, transfer speeds are good at first but drop after a few seconds to 1-2 Mib/s. From what I read, the fast transfer at the ...
0
votes
1answer
902 views

Fedora12 Slow USB 2.0 Write Speed, ehci_hcd module is missing

I am using Fedora 12, the problem I am facing is USB 2.0 write speed. I have a dual boot system with Windows XP and Fedora 12. USB 2.0 write speed in Windows XP is much faster then what I am getting ...
0
votes
2answers
911 views

Low USB transfer speed

I am using Windows Vista, my Motherboard is Intel D102GGC2 The transfer speed through USB is very slow on my PC, just 2-3 MBps... I also use Ubuntu 9.10, and surprisingly the USB transfer speed is ...
2
votes
2answers
8k views

How to increase the speed between two external hard drives on my laptop?

I own Sony Vaio Z laptop with two external USB ports. It's quite new and has USB 2.0 support. I'm using Vista x64 on it. I also have two external usb hard drives, Iomega 500GB and WD for 1TB. Every ...
2
votes
1answer
164 views

Determining speed (class) of USB on PC

Is there a method for determining the speed of a USB port on a Windows XP PC, without using a USB protocol analyzer? I'm looking for something simple, such as looking at the Device Manager. I would ...
0
votes
1answer
906 views

USB-to-Parallel adapter rated as USB 1.1 - will its driver lower speed of USB 2.0 bus?

I need to connect a printer with a parallel port to a computer with only a USB 2.0 bus. I'd like to do so without lowering the USB 2.0 bus speed to USB 1.1. All the USB-to-Parallel adapter cable ...
5
votes
2answers
8k views

How to measure data transfer speed between my internal SATA HDD and External USB HDD?

How to measure data transfer speed between my internal SATA HDD and External USB HDD? I purchased new Seegate freego USB HDD but when i copy somthing from internal HDD to USB HDD or viceversa data ...
1
vote
1answer
474 views

USB standard - Speed of a Bit

Ive got a question. How USB 1.0 negotiate the duration of a bit on output ? I mean speed of connection ? Is it const all the time ?
0
votes
7answers
691 views

Actual High Speed USB flash drive

I'm looking to upgrade my EEE 1000H by possibly replacing the HDD with simple (internal) usb connected storage. The problem I'm having now is that I can't seem to find any actual high speed usb ...
2
votes
3answers
1k views

How does a hard drive compare to Flash memory working as a hard drive in terms of speed?

Some experiment I did with hard drive read/write speed was 10MB/s write and 40MB/s read, and with a USB Flash drive, it can be 5MB/s write and 10MB/s read. Also, if I put a virtual hard drive .vhd ...
16
votes
3answers
12k views

Do USB or PS/2 keyboards respond faster?

Do USB or PS/2 keyboards respond faster in terms of end-to-end input latency, keystrike to character appearing on the screen? Related: Under either connection, is the time between keystrike to ...
4
votes
3answers
369 views

Shopping for Fast USB Flash Drives [closed]

I would like to pick up some really fast USB flash drives in the 16 - 64 GB range. When looking at drives they just list their size, their form factor (key chain hook, slider, etc.) and the fact that ...
17
votes
11answers
68k views

How long would it take to transfer 1TB over USB 2.0?

This might be a completely stupid question because it is conceivably highly dependent on the respective disk speeds. But I am thinking that there is a speed cap that is specific to USB 2.0 that would ...