VMware backup solution for vSphere / vCenter / ESXi VM backup
USB Image Tool for Windows easily backs up and restores your complete VMware ESXi hypervisor on USB or SD flash drives, a simple/free clone for peace of mind before patching or upgrading
How to Create a Bootable ESXi USB Flash Drive using Linux
VMware: vSphere HTML5 Web Client Fling - Novedades - El Blog de Jorge de la Cruz
How-to add an ESXi connected USB device to a VM - vBrain.info