Member Avatar for jinaranjan

I need to connect my old hasp 3 which can connected to parallel port of the computer in to usb port. Can i use parallel to usb adapter for this purpose /

  • 3 Contributors
  • 2 Replies
  • 150 Views
  • 3 Days Discussion Span
  • Latest Post Latest Post by Jelousmee034

Dani AI

Generated

For : a simple parallel-to-USB printer cable will almost certainly not make a legacy parallel HASP dongle work. Those USB adapter cables and network print servers are built to emulate printers and do not expose the low-level LPT register access, handshake lines or timing that a parallel HASP key requires.

Why it fails: parallel HASP dongles rely on direct, low-level parallel-port behavior (pin-level handshakes, EPP/ECP or legacy port-mapped I/O). USB printer adapters implement a USB printing class and do not provide raw port I/O or true IEEE‑1284 behavior, so the dongle cannot be addressed.

Practical options:

  • Install a true parallel port (IEEE‑1284) in the PC — a PCI or PCIe parallel-port card with ECP/EPP support and drivers for the target OS. Steps: fit the card, enable/verify LPT in BIOS/Device Manager, install the HASP/Sentinel drivers supplied by the software vendor, then test the protected application.
  • Use a machine or docking station that already provides a real LPT port.
  • Ask the software vendor to rehost the license (USB HASP or software license). Vendors often provide migration paths — this is usually the most reliable long-term fix.
  • Do not rely on USB-to-printer cables or standard print servers for dongles; they do not provide the necessary hardware access.

Quick checks and cautions: a printer-only USB adapter typically appears as “USB Printing Support” (no LPTn) in Device Manager. When choosing a parallel card, confirm driver availability for the OS (signed 64-bit drivers may be required). License-transfer or replacement from the vendor may have a fee. Avoid any illegal dongle-cracking tools.

As noted earlier, this is a common issue; ’s intent to post further info is appropriate, but the safe solutions are real LPT hardware or vendor rehosting.

Member Avatar for Jelousmee034

I need to connect my old hasp 3 which can connected to parallel port of the computer in to usb port. Can i use parallel to usb adapter for this purpose /

- Woo i will surely post this information on my site.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.