![]() The USB arbitrator supports up to 15 USB controllers (vSphere 7.0). Access to the USB device connected to one VM is blocked for other VMs. Only one VM can access the USB device at a time. The arbitrator scans physical USB devices attached to the physical server and is responsible for USB device traffic routing between a physical host and a virtual machine. The arbitrator is a dedicated service on an ESXi server. There are three main components required for USB passthrough functioning: the arbitrator, USB controller, and physical USB device. It may happen that users need to use software that is protected by hardware USB license keys on virtual machines. Another use case of this feature is when you need to copy files from/to a USB hard disk drive to/from a virtual machine directly with high speed. ![]() You can install the old Windows version supported by the USB device and connect this device to a virtual machine. For example, you have an old scanner or printer that doesn’t have drivers for the latest Windows OS versions. ![]() Reasons vary for using passthrough for a USB device from the ESXi server to a guest operating system (OS) of a virtual machine. VMware passthrough is a feature available starting with ESXi 4.1. VMware USB device passthrough is a feature that allows you to connect a physical USB device attached to a USB port of a physical ESXi server to a virtual machine as if the USB device was connected to a virtual machine directly. DISCOVER SOLUTION What Is USB Passthrough?
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