Computer with Parallel Port: Which Machines Still Have It
The question ‘computer with parallel port’ is the machine-side of the LPT identification: which computers still carry the port, and how to confirm the one on the bench has it. The modern desktop and the laptop mostly retired the parallel port – the USB and the network took the printer’s job, and the new machine’s panel shows no wide D-Sub 25. But the machine classes that keep it are active: the industrial PC that serves the line’s legacy devices, the legacy desktop still in service past its generation, the embedded controller that carries the port for the instrument it drives, and the thin-client-style machine built for the specific port its position needs. This guide covers the machine classes that carry the parallel port, how to confirm it on a specific machine (the panel, the device manager, the spec), what the port connects on those machines (the direct printer cable, the industrial device), and the adapter’s place where the machine does not carry it.
Quick Answer / Technical Summary
A computer with a parallel port is a machine whose rear panel carries the LPT port – the wide D-Sub 25 connector the legacy printer and the industrial device plug into. The machine classes that still have it: the industrial PC (the line’s legacy printers, instruments, and I/O), the legacy desktop (in service past its generation), the embedded controller (the port for the device it drives), and the purpose-built machine for the position’s port need. The confirmation is the panel shape (the wide D-Sub 25), the device manager’s LPT1 entry in the Ports (COM & LPT) node, and the model spec’s port list. Where the machine does not carry the port, the USB-to-parallel adapter on its USB port recreates it – the computer-with-parallel-port function served by the computer-plus-adapter build instead.
The Machine Classes That Carry It
The parallel port’s active machines are the classes the modern desktop left behind. The industrial PC is the first: the machine built for the line’s environment, carrying the ports the line’s legacy devices need – the parallel port for the impact printer, the instrument with the parallel I/O, the controller interface the line runs. The legacy desktop is the second: the machine in service past its generation, the port it shipped with still the connection its printer uses, the replacement not yet made. The embedded controller is the third: the purpose-built machine that carries the port for the specific device it drives – the instrument, the actuator interface, the legacy I/O the controller’s build includes. The purpose-built machine is the fourth: the thin-client-style or the kiosk machine built with the port its position needs, the parallel input the build’s spec. Four classes, one thread: the machine whose work still runs on the parallel device, and the port the work requires.
The industrial PC, the legacy desktop, the embedded controller, the purpose-built machine – the classes whose work still runs on the parallel device.
Confirming the Port on the Specific Machine
The confirmation is the same three checks regardless of the machine class. The panel: the wide D-Sub 25 on the rear (or the side, on the form factor that puts it there) – the two rows of pins under the shell, the keying notch, distinct from the 9-pin serial and the USB. The device manager: the Ports (COM & LPT) node, the LPT1 entry on the machine that carries the port – the OS’s confirmation of the hardware’s presence. The model spec: the port list in the machine’s documentation, the parallel port named among the I/O. The three checks confirm the port – the shape on the panel, the entry in the manager, the line in the spec – and they answer the question for the specific machine on the bench: does it carry the parallel port, and is it the one the device connects to. The confirmation is the first step of the connection plan, and it is the three checks run against the machine in hand.
The panel shape, the device manager entry, the model spec – the three checks that confirm the port on the machine in hand.
What the Port Connects on Those Machines
The port’s connections follow the machine’s work. On the industrial PC, the direct parallel cable to the line’s printer – the impact printer, the label printer, the receipt printer the line runs – and the industrial device with the parallel I/O: the instrument, the controller interface, the legacy I/O the line’s process touches. On the legacy desktop, the printer cable to the office printer – the same connection the desktop ran for the generation, the cable the D-Sub 25 to Centronics 36 run. On the embedded controller, the device the controller drives – the instrument’s parallel input, the actuator interface’s port, the legacy I/O the controller’s build serves. The common thread: the direct cable from the machine’s port to the parallel device, the run the machine’s work requires. The port’s connection is the device’s parallel input, the cable the run between the two, the machine’s work the reason the port is there.
The direct cable to the parallel device – the line’s printer, the instrument, the controller interface – the machine’s work the port serves.
The Adapter Where the Machine Does Not Carry It
Where the machine on the bench does not carry the parallel port – the modern desktop, the USB-only laptop – the function is served by the adapter build instead of the native port: the USB-to-parallel adapter on the machine’s USB port, the D-Sub 25 female in the adapter’s body, the same printer cable and the same device on it. The computer-with-parallel-port becomes the computer-plus-adapter: the machine’s USB port carries the adapter, the adapter carries the LPT port, and the device connects to the adapter’s port the way it connected to the machine’s native one. The build’s difference is the machine side – the native port or the adapter’s – and the device side is unchanged: the parallel cable, the parallel input, the work the port serves. The adapter is the answer for the machine class that retired the port but not the device it served.
The computer-plus-adapter: the machine’s USB port carries the LPT function, the device side unchanged – the answer for the port-less machine.
Technical Specifications & Performance Benchmarks
| Machine Class | Why It Carries the Port | The Connection | The Confirmation |
|---|---|---|---|
| The industrial PC | The line’s legacy devices | Direct cable to the printer / I/O | Panel + manager + spec |
| The legacy desktop | In service past its generation | The printer cable, the office build | Panel + manager + spec |
| The embedded controller | The device it drives | The instrument / actuator I/O | The controller’s spec |
| The purpose-built machine | The position’s port need | The device the position runs | The build’s spec |
| The port-less modern machine | The adapter serves it | The USB-to-parallel adapter | The adapter’s port entry |
Industrial & Enterprise Application Scenarios
- The Line’s Industrial PC: The bench machine carries the D-Sub 25 – the impact printer on the line, the direct cable, the port the line’s work requires, the confirmation from the panel and the manager.
- The Inherited Legacy Desktop: The old desktop still in service, the printer on its parallel port – the port confirmed, the cable the connection, the replacement not yet in the plan.
- The Embedded Controller’s Bench: The controller’s parallel port, the instrument it drives – the port the build carries for the device, the connection the controller’s work runs on.
- The USB-Only Machine’s Device: The modern laptop, the legacy printer it must serve – the adapter on the USB port, the LPT function recreated, the device connected through the adapter’s port.
System Integration & Recommended Connectivity Infrastructure
To build a complete workstation or AV/network connectivity stack, pair these adapters, hubs, and conversion parts with our certified data, video, and network interconnect range:
- lpt port: The port this article’s machines carry – the LPT port’s identification and connections – is the full guide in the lpt port article.
- parallel port to usb: The adapter that serves the port-less machine – the parallel-to-USB bidirectional part – is the full spec in the parallel port to usb article.
- adapter series: The USB-to-parallel adapter sits in the adapter series as the legacy-parallel member – the computer-with-parallel-port function the adapter build serves.
- usb extension cable: The adapter’s upstream run from the machine’s USB port is the usb extension cable’s job – the reach that positions the adapter at the device’s side.
Frequently Asked Questions (FAQ)
Q: Which computers still have a parallel port?
The machine classes whose work runs on the parallel device: the industrial PC (the line’s legacy printers and I/O), the legacy desktop (in service past its generation), the embedded controller (the device it drives), and the purpose-built machine for the position’s port need. The modern desktop and laptop mostly retired it.
Q: How do I confirm the machine on my bench has it?
Three checks: the panel shape (the wide D-Sub 25, distinct from the 9-pin serial), the device manager (the LPT1 entry in the Ports (COM & LPT) node), and the model spec (the parallel port in the port list). The three confirm the port on the specific machine.
Q: What does the port connect on these machines?
The parallel device the machine’s work requires: the direct cable to the line’s printer (the impact, the label, the receipt), the instrument with the parallel I/O, the controller interface, the legacy I/O the process touches. The device’s parallel input, the cable the run between.
Q: My machine has no parallel port but I need to connect the device – what now?
The USB-to-parallel adapter on the machine’s USB port: the D-Sub 25 female in the adapter’s body, the device’s cable on it. The computer-with-parallel-port becomes the computer-plus-adapter – the function served, the device side unchanged.