About hardkey licenses
An encapsulated chip that must be physically connected to the computer’s parallel port (LPT1) or USB interface.
The software license resides in the hardkey, and you cannot share this license simultaneously with more than one other copy of software in the network. If you connect the hardkey to another computer, then you effectively transfer the license to that computer.
Using the parallel port hardkey does not prevent you from connecting another device — such as a printer — to the port. The hardkey should be electronically transparent to other devices connected to the parallel port. You simply connect the hardkey to the computer and then connect the printer cable to the hardkey. However, you may encounter problems if you install more than one hardkey (for different products) on the same parallel port.
On the other hand, while using the USB hardkey, the USB port cannot be shared with any other device.