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# 1.1 Release Contents

This table lists the contents of the USB v3.16.0 release, including a brief description.

## USB Middleware

Module | Description
--- | ---
USB Device Stack | The USB Device Libraries offer comprehensive support for various USB device classes, including CDC, HID, MSD, Audio, Printer, and Vendor.
USB Host stack | USB Host Libraries offer support for various client drivers, including CDC, HID, MSD, Hub, and Audio.

## USB Drivers

Module | Description
--- | ---
USBHS | USB High-Speed Device and Host mode driver for PIC32CZ CA80/CA90, PIC32CK, and PIC32MZ EF/DA microcontroller families.
USBFS | USB Device and Host mode driver for WBZ653, PIC32MX/MK and PIC32MZ W1 microcontroller families.
USBHSV1 | USB High-Speed Device and Host mode driver for SAME70/V70/V71/S70 microcontroller families.
USBFSV1 | USB Device and Host mode driver for SAMD2x/E5x/D5x/DA1/L21, PIC32CM/CK/CX microcontroller families. USB Device mode driver for SAMD11/L22 microcontroller families.
UDPHS | USB High-Speed Device Port driver for SAMA5, SAMA7, SAM9X60, and SAM9X7 microprocessor families.
USBDP | USB Device Port driver for SAMG55 microcontroller family.
UHP-EHCI | USB Host Port driver for EHCI (Enhanced Host Controller Interface) compliant USB peripheral in SAMA5, SAMA7, SAM9X60, and SAM9X7 microprocessor families.
UHP-OHCI | USB Host Port driver for OHCI (Open Host Controller Interface) compliant USB peripheral in SAMA5, SAMA7, SAM9X60, and SAM9X7 microprocessor families, and SAMG55 microcontrollers.