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Green PCB PCIe card with silver DB25 parallel port bracket

SMUGDESK

SMUGDESK PCIe to DB25 Parallel Port Card WCH382L

SKU CH-Z8SP-8NZ8E

Adds a native DB25 parallel port via PCIe x1 for legacy printers, CNC machines and industrial instruments using the WCH382L chipset

  • Adds native DB25 parallel port for legacy devices
  • IEEE 1284 compliant with SPP, PS2, EPP, ECP modes
  • Fits any PCIe x1, x4, x8, x16 slot on desktop boards
  • Built-in FIFO buffer ensures stable long-run industrial operation
  • Supports Windows, Linux and DOS for broad OS compatibility

Industrial PCIe parallel adapter

This SMUGDESK card adds a native DB25 LPT port to a modern desktop through any PCIe x1, x4, x8 or x16 slot. It targets workshops and labs that still drive CNC machines, dot-matrix printers or test instruments from legacy parallel software. The onboard WCH382L controller provides a real hardware port instead of a USB emulation layer.

IEEE 1284 multimode limits

The adapter complies with the IEEE 1284 specification and operates in SPP, PS2, EPP and ECP modes. Throughput is bounded by the parallel signalling standard itself, so very high-speed bulk transfers will saturate the interface. Cable length and signal integrity follow the same electrical constraints defined by the 1284 specification.

FIFO-buffered continuous operation

An integrated FIFO buffer reduces data loss and packet errors during sustained transfers, giving reliable headroom for long-hour industrial runs. The card handles typical legacy printer streams and CNC command flows comfortably, but bandwidth-heavy tasks such as large bitmap dumps will reach the parallel port’s inherent ceiling. Driver support covers Windows, Linux and DOS environments.

Highlights

  • Adds native DB25 parallel port for legacy devices
  • IEEE 1284 compliant with SPP, PS2, EPP, ECP modes
  • Fits any PCIe x1, x4, x8, x16 slot on desktop boards
  • Built-in FIFO buffer ensures stable long-run industrial operation
  • Supports Windows, Linux and DOS for broad OS compatibility

Specifications

No published specifications for this item yet.

Questions about this item

Which version of the WCH382L chipset card should I choose for my CNC machine?

The card uses the WCH382L chipset as a single hardware version; choose it when you need a native DB25 parallel port for legacy CNC or printer equipment.

What does IEEE 1284 compliance mean for my legacy printer?

It guarantees hardware-level SPP, PS2, EPP and ECP modes so the printer sees a real parallel port, not a USB emulation.

Which PCIe slot standard does the x1 card work with and what bandwidth limit applies?

It fits x1, x4, x8 and x16 slots and runs at the x1 lane speed native to the WCH382L controller.

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