1. Introduction
The Adesso ADP-PU21 is a PS/2 to USB adapter designed to facilitate the use of legacy PS/2 keyboards and mice with modern computer systems that primarily feature USB ports. This adapter allows you to connect two PS/2 devices (one keyboard and one mouse) to a single USB port on your computer, providing a seamless transition for your existing peripherals.
Image 1.1: Adesso ADP-PU21 PS/2 to USB Adapter in its retail packaging, showing the adapter with its USB connector and two PS/2 ports (purple for mouse, green for keyboard).
2. Product Features
- Connects two PS/2 input devices (keyboard and mouse) to one USB port.
- Easy installation with no software driver required.
- Compliant with USB 1.0/1.1 Revisions.
- Supports both UHCI and OHCI specifications.
- Bus-powered, eliminating the need for an external power adapter.
- Compatible with computer USB interfaces and PS/2 ports of KVM switches.
3. Setup Instructions
Follow these steps to connect your PS/2 devices using the Adesso ADP-PU21 adapter:
- Ensure your computer is powered off or that you are connecting to a hot-swappable USB port.
- Connect your PS/2 keyboard to the green PS/2 port on the ADP-PU21 adapter.
- Connect your PS/2 mouse to the purple PS/2 port on the ADP-PU21 adapter.
- Plug the USB connector of the ADP-PU21 adapter into an available USB port on your computer.
- Your operating system should automatically detect the adapter and connected devices. No additional drivers are typically required.
Image 3.1: The Adesso ADP-PU21 adapter, illustrating its USB connector on one end and the green (keyboard) and purple (mouse) PS/2 connectors on the other.
4. Operating Instructions
Once the Adesso ADP-PU21 adapter is connected as described in the setup section, your PS/2 keyboard and mouse will function as standard USB input devices. The adapter translates the PS/2 signals into USB signals, allowing your computer to recognize and interact with your legacy peripherals. No special operating procedures are required beyond the normal use of your keyboard and mouse.
5. Troubleshooting
- Devices Not Recognized:
- Ensure the PS/2 connectors are securely plugged into the correct color-coded ports (green for keyboard, purple for mouse).
- Try plugging the USB connector into a different USB port on your computer.
- Restart your computer with the adapter and devices connected.
- Verify that your PS/2 keyboard and mouse are functional when connected directly to a PS/2 port (if available) or with another adapter.
- Intermittent Functionality:
- Check for loose connections at all points (PS/2 devices to adapter, adapter to USB port).
- Ensure the USB port provides sufficient power. While bus-powered, some older or unpowered USB hubs might not provide enough power for both devices. Try connecting directly to a computer's USB port.
- No Drivers Found:
The Adesso ADP-PU21 is designed to be plug-and-play and does not require specific software drivers. If your operating system prompts for drivers, it may indicate an issue with the adapter itself or the USB port. Try the steps for "Devices Not Recognized."
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | ADP-PU21 |
| Connector Type | USB (Type-A Male) to Dual PS/2 (Mini-DIN 6-pin Female) |
| USB Compliance | USB 1.0/1.1 Revisions |
| USB Specifications Supported | UHCI and OHCI |
| Power Source | Bus-Powered (no external adapter needed) |
| Color | Black |
| Dimensions (L x W x H) | Approximately 2 x 1.5 x 0.5 inches (main adapter body) |
| Item Weight | Approximately 4.8 ounces |
| Compatible Devices | PC, KVM Switches |
7. Warranty and Support
For detailed warranty information, technical support, or to contact customer service, please refer to the official Adesso website or the documentation included with your purchase. Adesso provides support for its products to ensure customer satisfaction.
You can typically find support resources, FAQs, and contact information on the manufacturer's official website: www.adesso.com
