* - Busware BUI
* - Busware CUL V3
* - Busware TUL
+ * - DorkbotPDX Duce
* - Fletchtronics Bumble-B (using manufacturer recommended peripheral layout)
* - Kernel Concepts USBFOO
* - Linnix UDIP
* - Microsin AVR-USB162
* - Minimus USB
* - Olimex AVR-USB-162
+ * - Olimex AVR-USB-32U4
+ * - Olimex AVR-USB-T32U4
* - Paranoid Studio's US2AX (V1, V2 and V3 hardware revisions)
* - PJRC Teensy (1.x and 2.x versions)
* - Sparkfun U2 Breakout Board