USB 2.0 Cables; USB 3.0 Cables; USB Screw Lock Cables. Compatible with Windows XP/Vista/7/8/8.1/10. Prolific pl2303 driver. Windows XP/Vista/7/8. Note: We have discontinued support for L and D series hard drives, including any updates for the drivers. If you’re on Windows XP SP3 and above, the only option is to remove the IDE hard drive from the case and plug directly to your PC, or purchase a USB to IDE adaptor, or purchase a new USB 2.0 enclosure.

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Starting with Windows 10, release 1703, a USB Audio 2.0 driver is shipped with Windows. It is designed to support the USB Audio 2.0 device class. The driver is a WaveRT audio port class miniport. For more information about the USB Audio 2.0 device class, see https://www.usb.org/documents?search=&type%5B0%5D=55&items_per_page=50.

The driver is named: usbaudio2.sys and the associated inf file is usbaudio2.inf.

The driver will identify in device manager as 'USB Audio Class 2 Device.' This name will be overwritten with a USB Product string, if it is available.

The driver is automatically enabled when a compatible device is attached to the system. However, if a third-party driver exists on the system or Windows Update, that driver will be installed and override the class driver.

Architecture

USBAudio.Sys fits within the wider architecture of Windows USB Audio as shown.

Related USB specifications

The following USB specifications define USB Audio and are referenced in this topic.

• USB-2 refers to the Universal Serial Bus Specification, Revision 2.0
• ADC-2 refers to the USB Device Class Definition for Audio Devices, Release 2.0.
• FMT-2 refers to the Audio Data Formats specification, Release 2.0.

The USB-IF is a special interest group that maintains the Official USB Specification, test specifications and tools.

Audio formats

The driver supports the formats listed below. An alternate setting which specifies another format defined in FMT-2, or an unknown format, will be ignored.

Type I formats (FMT-2 2.3.1):

• PCM Format with 8.32 bits per sample (FMT20 2.3.1.7.1)
• PCM8 Format (FMT-2 2.3.1.7.2)
• IEEE_FLOAT Format (FMT-2 2.3.1.7.3)

Type III formats (FMT-2 2.3.3 and A.2.3):

• IEC61937_AC-3
• IEC61937_MPEG-2_AAC_ADTS
• IEC61937_DTS-I
• IEC61937_DTS-II
• IEC61937_DTS-III
• TYPE_III_WMA

Feature descriptions

This section describes the features of the of the USB Audio 2.0 driver.

Audio function topology

The driver supports all entity types defined in ADC-2 3.13.

Each Terminal Entity must have a valid clock connection in compatible USB Audio 2.0 hardware. The clock path may optionally include Clock Multiplier and Clock Selector units and must end in a Clock Source Entity.

The driver supports one single clock source only. If a device implements multiple clock source entities and a clock selector, then the driver will use the clock source that is selected by default and will not modify the clock selector’s position.

A Processing Unit (ADC-2 3.13.9) with more than one input pin is not supported.

An Extension Unit (ADC-2 3.13.10) with more than one input pin is not supported.

Cyclic paths in the topology are not allowed.

Audio streaming

The driver supports the following endpoint synchronization types (USB-2 5.12.4.1):

• Asynchronous IN and OUT
• Synchronous IN and OUT
• Adaptive IN and OUT

For the asynchronous OUT case the driver supports explicit feedback only. A feedback endpoint must be implemented in the respective alternate setting of the AS interface. The driver does not support implicit feedback.

There is currently limited support for devices using a shared clock for multiple endpoints.

For the Adaptive IN case the driver does not support a feedforward endpoint. If such an endpoint is present in the alternate setting, it will be ignored. The driver handles the Adaptive IN stream in the same way as an Asynchronous IN stream.

The size of isochronous packets created by the device must be within the limits specified in FMT-2.0 section 2.3.1.1. This means that the deviation of actual packet size from nominal size must not exceed +/- one audio slot (audio slot = channel count samples).

Descriptors

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An audio function must implement exactly one AudioControl Interface Descriptor (ADC-2 4.7) and one or more AudioStreaming Interface Descriptors (ADC-2 4.9). A function with an audio control interface but no streaming interface is not supported.

The driver supports all descriptor types defined in ADC20, section 4. The following subsections provide comments on some specific descriptor types.

Class-Specific AS interface descriptor

For details on this specification, refer to ADC-2 4.9.2.

An AS interface descriptor must start with alternate setting zero with no endpoint (no bandwidth consumption) and further alternate settings must be specified in ascending order in compatible USB Audio 2.0 hardware.

An alternate setting with a format that is not supported by the driver will be ignored.

Each non-zero alternate setting must specify an isochronous data endpoint, and optionally a feedback endpoint. A non-zero alternate setting without any endpoint is not supported.

The bTerminalLink field must refer to a Terminal Entity in the topology and its value must be identical in all alternate settings of an AS interface.

The bFormatType field in the AS interface descriptor must be identical to bFormatType specified in the Format Type Descriptor (FMT-2 2.3.1.6).

For Type I formats, exactly one bit must be set to one in the bmFormats field of the AS interface descriptor. Otherwise, the format will be ignored by the driver.

To save bus bandwidth, one AS interface can implement multiple alternate settings with the same format (in terms of bNrChannels and AS Format Type Descriptor) but different wMaxPacketSize values in the isochronous data endpoint descriptor. For a given sample rate, the driver selects the alternate setting with the smallest wMaxPacketSize that can fulfill the data rate requirements.

Type I format type descriptor

For details on this specification, refer to FMT-2 2.3.1.6.

The following restrictions apply:

Class-Specific AS isochronous audio data endpoint descriptor

For details on this specification, refer to ADC-2 4.10.1.2.

The MaxPacketsOnly flag in the bmAttributes field is not supported and will be ignored.

The fields bmControls, bLockDelayUnits and wLockDelay will be ignored.

Class requests and interrupt data messages

The driver supports a subset of the control requests defined in ADC-2, section 5.2, and supports interrupt data messages (ADC-2 6.1) for some controls. The following table shows the subset that is implemented in the driver.

Additional information on the controls and requests is available in the following subsections.

Clock source entity

For details on this specification, refer to ADC-2 5.2.5.1.

At a minimum, a Clock Source Entity must implement Sampling Frequency Control GET RANGE and GET CUR requests (ADC-2 5.2.5.1.1) in compatible USB Audio 2.0 hardware.

The Sampling Frequency Control GET RANGE request returns a list of subranges (ADC-2 5.2.1). Each subrange describes a discrete frequency, or a frequency range. A discrete sampling frequency must be expressed by setting MIN and MAX fields to the respective frequency and RES to zero. Individual subranges must not overlap. If a subrange overlaps a previous one, it will be ignored by the driver.

A Clock Source Entity which implements one single fixed frequency only does not need to implement Sampling Frequency Control SET CUR. It implements GET CUR which returns the fixed frequency, and it implements GET RANGE which reports one single discrete frequency.

Clock selector entity

For details on this specification, refer to ADC-2 5.2.5.2

The USB Audio 2.0 driver does not support clock selection. The driver uses the Clock Source Entity which is selected by default and never issues a Clock Selector Control SET CUR request. The Clock Selector Control GET CUR request (ADC-2 5.2.5.2.1) must be implemented in compatible USB Audio 2.0 hardware.

Feature unit

For details on this specification, refer to ADC-2 5.2.5.7.

The driver supports one single volume range only. If the Volume Control GET RANGE request returns more than one range, then subsequent ranges will be ignored.

The volume interval expressed by the MIN and MAX fields should be an integer multiple of the step size specified in the RES field.

If a feature unit implements single channel controls as well as a master control for Mute or Volume, then the driver uses the single channel controls and ignores the master control.

Additional Information for OEM and IHVs

OEMs and IHVs should test their existing and new devices against the supplied in-box driver. Grendizer full episodes english.

There is not any specific partner customization that is associated with the in-box USB Audio 2.0 driver.

This INF file entry (provided in a update to Windows Release 1703), is used to identify that the in-box driver is a generic device driver.

The in-box driver registers for the following compatible IDs with usbaudio2.inf.

See the USB audio 2.0 specification for subclass types.

USB Audio 2.0 Devices with MIDI (subclass 0x03 above) will enumerate the MIDI function as a separate multi-function device with usbaudio.sys (USB Audio 1.0 driver) loaded.

The USB Audio 1.0 class driver registers this compatible ID with wdma_usb.inf.

And has these exclusions:

An arbitrary number of channels (greater than eight) are not supported in shared mode due to a limitation of the Windows audio stack.

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IHV USB Audio 2.0 drivers and updates

For IHV provided third party driver USB Audio 2.0 drivers, those drivers will continue to be preferred for their devices over our in-box driver unless they update their driver to explicitly override this behavior and use the in-box driver.

Audio Jack Registry Descriptions

Starting in Windows 10 release 1703, IHVs that create USB Audio Class 2.0 devices having one or more jacks have the capability to describe these jacks to the in-box Audio Class 2.0 driver. The in-box driver uses the supplied jack information when handling the KSPROPERTY_JACK_DESCRIPTION for this device.

Jack information is stored in the registry in the device instance key (HW key).

The following describes the audio jack information settings in the registry:

<tid> = terminal ID (As defined in the descriptor)

<n> = Jack number (1 ~ n).

Convention for <tid> and <n> is:

• Base 10 (8, 9, 10 rather than 8, 9, a)
• No leading zeros
• n is 1-based (first jack is jack 1 rather than jack 0)

For example:

T1_NrJacks, T1_J2_ChannelMapping, T1_J2_ConnectorType

For additional audio jack information, see KSJACK_DESCRIPTION structure.

These registry values can be set in various ways:

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• By using custom INFs which wrap the in-box INF for the purpose to set these values.

• Directly by the h/w device via a Microsoft OS Descriptors for USB devices (see example below). For more information about creating these descriptors, see Microsoft OS Descriptors for USB Devices.

Microsoft OS Descriptors for USB Example

The following Microsoft OS Descriptors for USB example contains the channel mapping and color for one jack. The example is for a non-composite device with single feature descriptor.

The IHV vendor should extend it to contain any other information for the jack description.

Troubleshooting

If the driver does not start, the system event log should be checked. The driver logs events which indicate the reason for the failure. Similarly, audio logs can be manually collected following the steps described in this blog entry. If the failure may indicate a driver problem, please report it using the Feedback Hub described below, and include the logs.

For information on how to read logs for the USB Audio 2.0 class driver using supplemental TMF files, see this blog entry. For general information on working with TMF files, see Displaying a Trace Log with a TMF File.

For information on 'Audio services not responding' error and USB audio device does not work in Windows 10 version 1703 see, USB Audio Not Playing

Feedback Hub

If you run into a problem with this driver, collect audio logs and then follow steps outlined in this blog entry to bring it to our attention via the Feedback Hub.

Driver development

This USB Audio 2.0 class driver was developed by Thesycon and is supported by Microsoft.

See also

What is CipherShield Smart Insert technology?
Smart Insert with CipherKey allows you to have total control of your data with two intelligent key insertion modes. Standard design with all CipherShield drives, mode 0 with hotplug mechanism enables you to authenticate and access the drive when the CipherKey is plugged in. When the key is removed, all data within the drive are encrypted. Code realize guardian of rebirth pc download.

Mode 1 is better utilized for a large data backup job where you don’t want to be tied waiting for the data transfer to be completed. The CipherShield drive is authenticated by plugging the key in once and removed. The drive runs without the need to have the key connected at all times. The risk of theft is no longer a concern because when a USB or power cable is unplugged, the drive will automatically lock down its content. This particular key insertion mode is only available via a direct order from Buslink, or call us at 626-336-1888 if you intend to order from other resellers or your preferred IT solution providers instead.

How to operate the drive?
All CipherShield drives utilize a CipherKey or two CipherKeys to gain access to the drive. Access to the drive is granted by inserting the key into a slot on the faceplate. By removing the key, data cannot be accessed even though the drive is still connected to the computer. When the key is removed, the drive is “transparent” to the operating system of a computer, thereby ensuring full protection of the data.

What is CipherKey, and how does it protect the CipherShield drive?
The CipherKey is a physical key with a design based on the Firewire form factor. It contains the secret encryption key code necessary for encryption and decryption operations. The hard drive has been partitioned and formatted using the CipherKey, thus the entire content of the hard drive is associated only with this unique key. Only a CipherKey containing the identical secret encryption key code can be used for authentication or to unlock the drive.

Why should I need CipherShield encrypted drive?
The sensitive nature of confidential information is driving the need to secure data stored on all portable computer systems. CipherShield’s innovative solution ensures multi-level privacy, confidentiality, and authentication – allowing organizations to protect valuable assets, credentials, and intellectual property that are exposed to significant risk of theft. Legal liability and the financial consequences associated with stolen confidential information require organizations to go to extreme lengths to protect their data. CipherShield encrypted storage products offer superior hardware-based encryption and pre-boot authentication, thus allowing companies to shield their data and regulate control over access to their corporate and sensitive customers information. By doing that, they comply with federal regulations such as Sarbanes-Oxley, or HIPAA (Health Insurance Portability and Accountability Act) for the healthcare industry.

Why hardware encryption is better than software-based encryption?
The encryption strength of the software-based / password protection approach depends entirely on the strength/unguessability of the password itself. Not only that, you have to take into consideration the fact that…. people just forget. With today’s hectic life, remembering a complex password like “Myd0g$N4me#7” with all the numbers, punctuations, and mixed uppercase and lowercase letters, will eventually lead to the password in a post-in note and stuck somewhere to the wall, or else they’re just going to create a simple password like “john123”. And then think about the scenario when the user does forget. With hardware-based key encryption, the key itself is the password. The encryption and decryption, which utilize a government-grade AES encryption algorithm, are done by a processor embedded inside. The access to the data doesn’t rely on a password, which could be easily hacked, but on a physical element.

Apart from a faster, real-time processing of data encryption and decryption, hardware-based encryption is also not as vulnerable as software-based password input in terms of brute force attack of password guessing. An attacker can plug the drive into the computer and have a program performs hundreds of password guessing in a second. Furthermore, there will also a cross-platform issue with the software-based password feature, in which it will only work in Windows PC, not Mac or Linux. With hardware-based encryption, this won’t be an issue at all. The main advantage to CipherShield over other security methods is that our product is designed to be used by everyone and anyone. Unlike software encryption, there are no passwords to remember or complex installation. Such methods usually require MIS support and are quite expensive to maintain.

File system formats explained

There are many types of file system used to store data on drives. The types depend on the operating system (OS) used. Microsoft Windows supports FAT, FAT32, NTFS, and exFAT. Macintosh supports FAT32, HFS+, exFAT, and NTFS (read-only). Linux supports: Ext4, ZFS, xfs, NTFS (need to enable support), and exFAT (need to enable support). It is best to use the native format for better security, compatibility, and speed, i.e. NTFS for Windows, Mac OS Extended (Journaled) for Macintosh, and Ext4 for Linux. If you need to use your drive in multiple OS, reformat your drive to exFAT. All our drives with USB-C come with exFAT as the default format so you can use it in all the OS.

Driver Download

The model number of all BUSlink hard drives are located at the back panel of the unit, where all the power and interface ports are. If you have any questions or difficulty in downloading the files, please contact us at support@buslink.com.

BUSlink USB 3.0 SuperSpeed PCI-Express Card (U3-PCIE)
Drive: USB3-PCIE.zip

L and D series USB 1.1 hard drives ( with yellow panel )

Please note that we no longer provide phone support for L, D, or P series hard drive.

Power adapter: DC output 12V – 2.5A
Driver: 3in1.exe
Alternate Driver: setup2000.exe

• Only use setup2000.exe if 3in1.exe does not work
• For Windows 98SE / ME / 2000 / XP SP1 and SP2 only
• Will not work with Windows XP SP 3, Windows Vista, and Windows 7

Note: We have discontinued support for L and D series hard drives, including any updates for the drivers. If you’re on Windows XP SP3 and above, the only option is to remove the IDE hard drive from the case and plug directly to your PC, or purchase a USB to IDE adaptor, or purchase a new USB 2.0 enclosure. Please email support@buslink.com for a current list of product examples.

Buslink USB 2.0 External Hard Drive (UII-xxx)
BUSlink Combo USB 2.0 and FireWire External Hard Drive (CO-xxx-U2FE)
BUSlink Triple Interface External Hard Drive (CO-xxx-U2FS)
Disk-On-The-Go USB 2.0 (D-xx-U2)
Disk-On-The-Go Lite Dual Interface USB 2.0 and FireWire (DL-xx-U2F)
Disk-On-The-Go Lite USB 2.0 (DL-xx-U2)
Power adapter for desktop drive: DC output 12V – 2A
Power adapter for Slim drive: DC output 7.5V – 1.2A
Driver: USB2MassStorage_v1019.zip icloud unlock tool mac download

• All these models are plug and play.
• The mass storage driver is built in on most OS.
• You only need to install the driver if the computer is still on Windows 98SE.

All FireWire drives including FireWire Data Bankers and Disk-On-The-Go external notebook drives are plug and play.
There is no separate driver available, and none is needed.

• FireWire Drive with 1 FireWire port will not work with OS X

Power adapter for Desktop Optical Drive: DC output 12V – 2A
Power adapter for Slim Optical Drive: DC output 7.5-1.2A
Driver: USB2MassStorage_v1019.zip

• All BUSlink External Optical Drives are plug and play, especially those models that start with UII-xx, and those with D-xx-U2 on slimline drives
• The mass storage driver is built-in on most OS.
• You only need to install the driver if the computer is still on Windows 98SE.

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BUSlink USB 2.0 PCI Card (UII-PCIP)
BUSlink USB 2.0 and FireWire PCI Card (PCI-U2F)
BUSlink USB 2.0 Cardbus (UII-CB4)
BUSlink USB 2.0, FireWire, and SATA Combo PCI Card (PCI-U2FS)
Driver: U2V2_1_4.zip
SATA Driver for BUSlink USB 2.0, FireWire, and SATA Combo PCI Card (PCI-U2FS): sata_PCI.zip

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BUSlink 2 ports SATA Cardbus (CB2S)
Driver: sata_cardbus.zip