Sch-u640 Usb Drivers For Mac

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For those interested in accessing their Samsung Convoy (sch-U640) via the USB cable from their Windows computer, here are some insights not apparent in the Users Manual. (I use XP).
The phone distinguishes three modes of communication via USB with a computer:
1. USB Mass Storage (Menu/9/2/8)
2. USB Media Sync, and
3. USB Modem.
The last two are chosen by a setting at Menu/9/9.
1. USB Mass Storage Mode (also see Users Manual pg. 138)
USB Mass Storage mode allows access to the external (microSD card, if installed) memory through Windows Explorer. No phone-specific USB drivers are required for this connection. You have some limited control over which files or folders are stored on the card. This is managed at Menu/9/8/1 or from a screen appearing at insertion of a card. None of the phone’s “built-in” files are moved to the card. Certain copy-protected files also cannot be moved to the card. For instance, none of the built-in ringtones or built-in pictures is present. Although it is possible to move your contacts to the card (Menu/9/8/2/7/Options/3/MarkAll/Done/Yes/OK), the phone is unaware of contacts on the card. Therefore “copying” contacts to the card can be useful for backup purposes, but if you “move” contacts to the card then the phone will show no contacts. (Note that pictures, including any associated with contacts, are managed separately and may be stored on the card or in the internal memory, your choice).
It appears that in USB Mass Storage mode one can add contacts one at a time or en mass by copying contact vcf files from the computer to the my_contacts directory. Then, with the phone disconnected from the computer, move the new contacts to the internal phone memory (Menu/9/8/3/7/Options/3/MarkAll/Done/Yes/OK). I am not knowledgeable on what restrictions, if any, apply to vcf files acceptable to the phone.
If you have inserted a microSD card and wish to upload pictures to your phone for use as contacts photos, then you can use the following format: jpeg, 72 dpi, 1600 or less (wide) x 1200 (high). In USB Mass Storage mode copy the pictures into the my_pix folder.
2. USB Media Sync Mode (also see Users Manual pg. 126)
USB Media Sync mode allows the computer, running VCast Music with Rhapsody, to manage music files on the phone. Installation is a two-step affair. First one installs a phone-specific USB driver (say from http://www.vzam.net/vcastmusic/Step2..nufacturerID=4 ). The Convoy (sch-U640) is not listed in that drivers table, so I chose the sch-U620 driver. The driver installer appears to be the same for many of the Samsung phones. With the USB driver installed, next one installs VCAST with Rhapsody.
Note: actually, the phone connects fine in USB Media Sync mode without the USB driver, and VCAST works, but one gets annoying “Found New Hardware” messages from Windows at connection and disconnection.
One can access the device memory, in part, in Windows Explorer when the phone is connected to the computer in USB Media Sync mode. Only two music-related folders appear (Music, Playlist), and the Music folder is sorted into performer/album/ subfolders unlike when viewed in USB Mass Storage mode. Whether one sees internal or external memory depends on where the phone is storing music files.
Note: When one explores the phone without loading the USB driver, a third folder, “Albums” appears.
Note: It is apparently not possible, or at least not obvious how, to upload calendar items to the Convoy from the computer (say from Outlook) via the USB connection. This can be done, one item at a time, via Bluetooth (Users Manual pg. 93).
Note: the USB driver obtained here is not compatible with the software program BitPim, which does not find the phone at all in USB Mass Storage or USB Media Sync mode. But see below!
3. USB Modem Mode
This mode of communication is designed to use the phone as a USB modem to connect a computer to the internet via the cellphone network. For that purpose one must first install VZAccess Manager.
The USB Modem mode, established at Menu 9/9 followed by plugging in the cable, does not cause the device to display any entry in Windows Explorer.
Note: Whether or not VZAccess Manager is installed on the computer, the USB Modem connection allows BitPim to interact with the Convoy. BitPim has not evaluated the Convoy, but several of the program’s features work when one manually selects the SCH-U750 (Alias 2) phone. However, I have not tried to write from BitPim to the phone.
Sch-u640 Usb Drivers For Mac

Apr 21, 2010  The Convoy (sch-U640) is not listed in that drivers table, so I chose the sch-U620 driver. The driver installer appears to be the same for many of the Samsung phones. With the USB driver installed, next one installs VCAST with Rhapsody. Move Music Files from Device - Samsung Convoy® (SCH-u640) [Device-Specific Instructions] Here's how to transfer music from your Samsung Convoy to your computer/sd card. Drivers Installer for SAMSUNG SCH-U640 - External Memory If you don’t want to waste time on hunting after the needed driver for your PC, feel free to use a dedicated self-acting installer. It will select only qualified and updated drivers for all hardware parts all alone.

What is USB?

USB is an industry standard for connecting computers and other devices. Many Mac computers have USB-A ports (sometimes referred to as USB 3 ports), which look like this:

USB 3.0 and USB 3.1 Gen 1 can transfer data up to 5 Gbps, and USB 3.1 Gen 2 can transfer data up to 10 Gbps.

What is USB-C?

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USB-C describes the shape and style of a port on your computer and the connectors that you can plug into the port. USB-C ports look like this:

Several different data transfer standards, like USB 3 and Thunderbolt 3, can flow through a USB-C port and connector. You can also connect your computer's AC power adapter to a USB-C port with a compatible USB-C charging cable.

USB-C ports are reversible, so you don't have to worry about which side of the connector is up when you plug it in.

These Mac computers have Thunderbolt 3 (USB-C) ports that support USB 3.1 Gen 2 and Thunderbolt 3:

  • iMac Pro (2017)
  • iMac (Retina 5K, 27-inch, 2017)
  • iMac (Retina 4K, 21.5-inch, 2017)
  • iMac (21.5-inch, 2017)
  • MacBook Pro (2016 and later)

These Mac notebooks have USB-C ports that support USB 3.1 Gen 1:

  • MacBook (2015 and later)
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You can use your USB 3 devices with the above Mac models using an appropriate adapter.

What version of USB does my Mac support?

You can use System Information or System Profiler to see what type of USB ports your Mac has, how fast these ports are, and what's currently connected to them. Learn more about identifying USB ports on your Mac.

What transfer rates does USB offer?

USB 3.1 Gen 2 can transfer data up to 10 Gbps. Newer Mac models with Thunderbolt 3 (USB-C) ports support these speeds.

Speeds of previous USB versions:

  • USB 3 and USB 3.1 Gen 1 can transfer data up to 5 Gbps.
  • USB 2 can transfer data up to 480 Mbps.
  • USB 1.1 can transfer data up to 12 Mbps.

Does USB 3 offer more power than USB 2?

Asus p5vdc tvm driver for mac. USB 3 devices can use up to 900mA of power (compared to 500mA used by USB 2 devices). You'll need to use a USB 3 cable to use the 900mA of power available. USB 2 cables don't support 900mA.

Why don't I see blue inserts on the USB ports of my Mac?

Some manufacturers use a blue insert to designate a USB 3 port or device. All USB ports on Mac computers that support USB 3 are USB 3 capable and don't have blue inserts.

What USB 3 devices are supported?

All devices that conform to what is commonly referred to as the '2008 version 1 USB 3.0 specification' are supported.

Are USB 3 hubs supported?

Hubs that conform to what is commonly referred to as the '2008 version 1 USB 3.0 specification' are supported.

How do I get the best performance from the USB 3 ports?

The first device you plug in will configure the port, so always connect USB 3-capable hubs or devices first.

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What happens if I plug in a USB 2 device into the USB 3 port first?

If you plug in a USB 2 hub first, all devices connected or 'daisy-chained' to that hub will operate up to the maximum transfer rate of USB 2 speed (480 Mbps).

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What happens if I plug my USB 3 device into a USB 2 port?

Your device should be backwards-compatible with USB 2 ports. However, you won't get USB 3 speed and power may be limited to 500mA.

Is USB 3 supported in Windows 7 and 8 using Boot Camp?

Yes. USB 3 is supported natively in Windows 8. See Boot Camp: Frequently asked questions about installing Windows 8 for more information.
To implement USB 3 support on Windows 7 using Boot Camp, download and install the Windows Support Software (drivers). See Boot Camp: Installing Windows 7 Frequently Asked Questions for more information.

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Are there differences between USB 3 cables and other USB cables?

Yes. USB 3 cables:

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  • Use more wires than other USB cables. This makes USB 3 cables a bit thicker than other USB cables.
  • Usually have a blue insert.
  • Have an 'SS' symbol on the connector that plugs into the computer.
  • Use a different connector on the device end than USB 2 cables.
  • Can deliver more power to an attached device (900mA).

Can I use a USB 2 cable to connect a USB 3 device to my computer?

If the device end of the cable fits into the connector on the device, yes. However, because it has fewer wires, you won't get USB 3 speed and power may be limited to 500 mA.

How can I determine if my device is connected as a USB 3 device?

Use the System Information utility:

  1. From the Apple () menu, choose About This Mac.
  2. Click System Report.
  3. Under the Hardware heading on the left side of the System Information window, click USB.

USB 3 devices appear under USB 3.0 Bus, and USB 2 devices appear under USB 2.0 Bus. Click the device names to learn more about each one.

Why do my USB 3 devices seem to only work at USB 2 speed when I use virtualization software on my Mac?

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Some virtualization software doesn't yet support USB 3. Contact the manufacturer of your virtualization software for more information.

Why don't some USB 3 devices activate or appear on the USB 3 bus?

Try these tips if a USB 3 device doesn't activate or appear on the USB 3 bus:

  • Be sure you've installed the latest software updates available for your computer. To check, choose App Store from the Apple menu and see if any updates are available.
  • Sometimes unplugging and plugging the device back in can resolve the issue.
  • Try plugging the device into another USB port on the computer.
  • Check to see if a firmware update is available for your device from the manufacturer.
  • If the device came with an AC adapter, use it.
  • Restart your computer.
  • Try a different USB 3 cable.
  • Try a different USB 3 hub.

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Why do I have difficulty with Wi-Fi or Bluetooth devices when USB 3 devices are attached to my computer?

Some USB 3 devices can generate radio frequency interference that can cause Wi-Fi and Bluetooth devices operating in the 2.4GHz band to have issues communicating with your computer. Here are some tips to avoid this issue:

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  • If your USB device has a cable long enough that you can move the device, place it away from your Mac—and make sure not to place it behind your Mac, or near the hinge of its display. The antennas for Wi-Fi and Bluetooth are located there, and USB 3 devices placed there might interfere with your wireless connections.
  • If you're using adapters or dongles on a Mac computer with Thunderbolt 3 (USB-C) ports, plug them into the front port on the left side of your Mac, or into the ports on the right side (if your computer has them). These ports are the farthest away from the antennas, making interference less likely.
  • To avoid interference on the 2.4GHz band using Wi-Fi, try using the 5GHz band instead. You can change this on your wireless base station. Bluetooth always uses 2.4GHz, so this alternative isn't available for Bluetooth.