0
votes
0answers
4 views

USB protocol: why SSPLIT transactions not allowed in microframe Y6?

In USB 2.0, the scheduling clock time base divides each millisecond frame into eight "microframes" that are 125 microseconds long. They are labeled Y0 to Y7. When a host is talking to a full speed ...
0
votes
3answers
159 views

Windows 8: How to change from USB 3.0 to USB 2.0

Is there a way to disable USB 3.0 and enable legacy USB 2.0 support on Windows 8? I have an old microphone (Blue Snowflake) that only works when plugged into a USB 2.0 port. Is there any way to ...
0
votes
0answers
51 views

What's the advantages of usb 3.0 compliant thumbdrive that doesn't have USB 3.0 speed performance?

I just learned that there are USB 3.0 compliant thumbdrives in the market that only support up to the maximum speed of USB 2.0 (nothing to do with using USB 3.0 device on USB 2.0 port here) and they ...
1
vote
0answers
132 views

Can I Power the front-panel USB 2.0 ports with the power supply's 5V rail?

I have a high power (700ma+) USB device I wish to use on a single front-panel USB port. The USB specification in Wikipedia states: The USB 1.x and 2.0 specifications provide a 5 V supply on a single ...
0
votes
2answers
49 views

Data speed on usb 1.0 vs 2.0

I have a CDMA USB dongle that I use for connecting to the internet. Now I plan to upgrade to a 3G dongle which has a USB 2.0 connection. Right now I have only USB 1.0 port on my computer. Will the ...
1
vote
2answers
500 views

Is there any advantage to using a USB 3 hub with USB 2 storage devices?

I have a host of USB 2.0 external HDDs that I'd like to plug into a single hub. Usually I don't actually access more than one at once, but you never know. Basically, I'm not sure how USB hubs work ...
4
votes
4answers
2k views

Would USB 3 make a difference for a USB 2 5400 RPM drive?

I've got a USB 2 5400 RPM external HD. I'm thinking of getting a new computer with USB 3 ports. If I'm currently getting read/write speeds from the external HD on USB 2 of roughly 30 mb/s (both read ...
2
votes
0answers
122 views

Installing USB Mouse on NF61S Micro AM2 SE?

I am using Windows XP sp3 and Windows 7 on NF61S Micro AM2 SE motherboard with AMD Athlon 64 X2 Dual Core 4400+, 2.31Ghz, 1.93RAM link for motherboard site; ...
4
votes
4answers
2k views

Is USB 3 backward compatiable?

If USB 3 is backwards compatible, why do they place USB 2 ports with USB 3 ports on motherboards? Also, do USB3 External drives not work with USB2 ports?
1
vote
1answer
711 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 ...
2
votes
1answer
451 views

How to enable USB 2.0 in Virtualbox 4.0.10, option for enabling EHCI is missing

I'm using Virtualbox 4.0.10 under Debian stable with Oracle VM VirtualBox Extension Pack 4.0.18r82821 to host an MS-Windows XP virtual machine for embedded software development. Unfortunately the VM ...
1
vote
2answers
2k views

Can I safely connect a USB 2.0/1.1 internal pin block to a USB3.0 motherboard header?

I've been working on my new PC build with the GA-Z77X-UD5H-WB WIFI motherboard. This board comes with a wifi/bluetooth card that goes into a PCIe x1 slot... but the card also wants to be connected to ...
0
votes
3answers
22k views

Extremely slow USB transfer speed

I am using Windows 7 32-bit, and have a Transcend 8 GB USB 2.0 flash drive. I have formatted the drive to NTFS using the Windows format tool. The problem is that when moving or copying files to and ...
-4
votes
2answers
3k views

What is the difference between USB 2.0 and USB 3.0? [closed]

I want to buy a Pen Drive and a HDD. For both case I get two categories. USB2.0 and USB 3.0. I wish to ask my T.V. is compatible with USB 2.0 pen drive. I wish to buy USB 3.0 pen drive. But that is ...
1
vote
4answers
4k views

Extend USB 3.0 cable

I have a couple of new USB 3.0 devices which connect to my USB 3.0 ports via the new "Blue" USB 3.0 cables that end in what looks like a USB 2.0 Type A connector. Indeed, the USB 3.0 devices will ...
4
votes
1answer
7k views

Does a USB hub affect performance?

I have two devices I want maximum throughput and latency with. (Midi drums and midi keyboard for example) Would connecting both to the same USB port via a hub effectively limit the maximum data ...
1
vote
1answer
192 views

Is a 2-Port USB 2.0 Hub faster than a 7-Port USB 2.0 Hub

I have a computer with about 6 external hard drives connected, however it's died and i'm replacing it with another computer with only 4 USB 2.0 ports. I have a 7 Port USB 2.0 Hub that is connected to ...
2
votes
0answers
689 views

USB Ethernet adapter with VLAN support available?

I'm looking for a USB Ethernet adapter with VLAN support. It has to work on Windows 7 Enterprise, and allow me to select which VLAN to connect to. Apparently I'm not able to find one on Amazon or ...
7
votes
2answers
3k views

How to know which USB port is 2.0?

My computer (running Windows XP) has 4 USB ports at the back. From the Device Manager window, I know that one of them is 2.0, and the rest are all 1.0. I have a webcam that I think will benefit from ...
1
vote
2answers
493 views

How can I tell if I am USB2?

Windows XP, SP3 3 USB Ports on the laptop In Device Manager, if I expand "Universal Serial Bus controllers", I see: Intel(R) ICH8 Family USB Universal Host Controller - XXXX Intel(R) ICH8 Family USB ...
1
vote
1answer
518 views

Is there such a thing as a firewire to usb 2 converter, for older Macs?

A friend has an old iLamp iMac, which only has USB 1. It’s got a FireWire 400 port though. To make it less painful getting video etc. on and off his iPhone 4, it’d be great if he could get USB 2 ...
1
vote
2answers
2k views

Why are my USB 2.0 devices hanging Windows XP?

Background on the machine I'm having a problem with: The machine was inherited and appears to be circa 2003 (there's a date stamp on the power supply which leads me to this conclusion). I've got it ...