# Procab Keystone USB 2.0 A to 4-pin Terminal Block Adapter (panel mount)

**URL:** https://aio.lv/en/product--procab-1kpbu357--4964450
**Data updated:** 2026-03-07 15:08 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** Procab
**Manufacturer code:** 1KPBU357
**EAN:** 5414795036307
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--procab-1kpbu357--4964450

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Keystone-style Procab adapter converting a USB 2.0 Type A connection to a 4-pin screw terminal block. Designed for panel or wall-plate installation, it provides a compact interface for integrating USB 2.0 signals into custom wiring, control panels, or audio-visual installations where direct cable termination is required. Suitable for data lines and low-voltage USB applications.

## Long description

The Procab Keystone USB 2.0 A to 4-pin Terminal Block Adapter (panel mount) is a keystone-style interface that converts a standard USB 2.0 Type A connection to a 4-pin screw terminal block suitable for panel or wall-plate installation. It provides a compact, easily mountable solution for terminating USB data and power lines in custom enclosures, control panels, AV racks, and other installations where direct wiring is required. The adapter preserves the USB 2.0 signal pairs and power conductors while offering a robust mechanical mounting for a finished panel appearance.
Advantages
This adapter offers a space-saving panel-mount keystone format that fits standard keystone wall plates and panels, simplifying integration into existing installations. The screw terminal block allows secure and tool-accessible termination of individual conductors without soldering, making on-site wiring changes straightforward. The product supports USB 2.0 signal and low-voltage power lines, enabling direct connection of data lines and 5 V power in compatible systems. Durable construction and standardized keystone dimensions ensure reliable mechanical retention in panels and stable electrical contact for typical USB 2.0 use cases.
Suitable for
Integrating USB 2.0 signal and power lines into AV racks and control panels
Custom wall-plate or keystone panel installations requiring direct cable termination
Prototyping or temporary field wiring where screw terminals are preferred over soldering
Low-voltage USB data connections in industrial or kiosk installations
Key specifications
Connector conversion: USB 2.0 Type A female to 4-pin screw terminal block
Mounting style: Keystone-format for panel or wall-plate installation
Signal support: USB 2.0 data pairs (D+ / D-) and power lines (5 V and ground) suitable for low-voltage USB applications
Termination: Removable/accessible screw terminals for individual conductors
Material and finish: Rugged housing with standard keystone dimensions for secure insertion
How to use
Install the adapter into a compatible keystone wall plate or panel cutout until it snaps into place. Strip the cable conductors to the recommended length, then insert each conductor into the corresponding screw terminal and tighten the screws to secure the wires. Connect a USB Type A cable to the adapter's female USB port for external device connection. Verify wiring matches USB pinout conventions (D+, D-, VBUS, GND) and ensure the system is powered down when making terminations to avoid short circuits. After wiring, test data transfer and power delivery with appropriate USB devices.
Usage recommendations
Use shielded twisted-pair wiring for the USB data lines where possible and keep data conductors separate from high-voltage or noisy power cables. Ensure screw terminals are tightened to a firm but not excessive torque to prevent conductor damage. Limit use to USB 2.0 speeds and low-voltage applications consistent with USB specifications; do not use for high-current or mains-voltage connections.

## FAQ

### How much does the Procab Keystone USB 2.0 A to 4-pin Terminal Adapter cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Procab products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Procab service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/4964450/32506450_large.webp