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type: product
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stock_number: "96967-1"
canonical_url: "https://www.artisantg.com/96967-1/Keysight-U4305B"
json_url: "https://www.artisantg.com/96967-1/Keysight-U4305B.json"
generated_at: "2026-11-06T23:35:11.183Z"
last_updated: "2026-10-14T13:00:51.160-05:00"
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# Keysight U4305B Protocol Exerciser for PCI Express 3.0

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: Keysight
- Model: U4305B
- Condition: Used and in Good Condition
- Price: $4,650.00 USD
- Availability: In stock, 1 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 2.5 lb, estimated
- Shipping dimensions: 8X8X3 in, estimated

## Categories

- Test Equipment > Electrical Test > Exercisers (primary)
- Military and Embedded Equipment > Embedded & Industrial > PCIe

## Details

This unit has a chip on the PCIe connector.

### Configuration

- Option 021: PTC- Protocol Test Card 3.0
- Option E08: Link Width: Exerciser Board x8 for PCIe 8 Gbps

### Includes

- Mean Well GST220A24-R7B AC/DC Switching Adaptor

View Photo of chipped PCIe connector.

## Function

The **Keysight U4305B** is a **Protocol Exerciser** for the **PCI Express (PCIe) 3.0** standard. In simple terms, it's a highly specialized tool used by engineers who design and test computer hardware (like motherboards, graphics cards, SSDs, etc.).

Unlike a *protocol analyzer* which just listens to data, an *exerciser* actively generates traffic, sends commands, and simulates various scenarios to test, stress, and validate that a device complies with the PCIe 3.0 specification and functions correctly under all conditions, including error states.

### **Detailed Breakdown**

#### **Keysight U4305B Protocol Exerciser for PCI Express 3.0**
This is the main system or chassis. It's designed specifically for testing devices that use the third generation of the PCI Express interface, which is a common high-speed connection standard inside computers.

#### **Configuration Options:**

*   **Option 021: PTC - Protocol Test Card 3.0**
    *   This is the core functional module. The Protocol Test Card is what contains the logic and software capabilities to run compliance tests, create custom test scripts, and verify every aspect of the PCIe protocol. It ensures a device under test (DUT) is "speaking" the PCIe language correctly.

*   **Option E08: Link Width: Exerciser Board x8 for PCIe 8 Gbps**
    *   **Link Width x8:** This specifies the physical connection. PCI Express communicates over "lanes." This board is configured to test a connection using **8 lanes (x8)**, which provides high bandwidth. This is common for devices like high-end graphics cards or NVMe SSDs.
    *   **8 Gbps:** This is the data rate per lane for PCIe 3.0 (which technically runs at 8 Giga-transfers per second, or GT/s). With 8 lanes, the theoretical maximum bandwidth is very high (approximately 8 GB/s), making this exerciser suitable for testing high-performance devices.

#### **Included Item:**

*   **Mean Well GST220A24-R7B AC/DC Switching Adaptor**
    *   This is the external power supply for the exerciser. It's a high-quality power brick that converts standard AC wall power to the DC power required by the Keysight unit.

### **In a Nutshell:**

You have a powerful and specific engineering tool for **validating and debugging high-speed computer hardware**. It's used to ensure that new PCIe 3.0 devices are reliable, compliant with industry standards, and will work correctly with other components.

## Images

- <https://www.artisantg.com/itemimages/keysight_u4305b_view1_202612714109.jpg>
- <https://www.artisantg.com/itemimages/keysight_u4305b_view2_202612714109.jpg>
- <https://www.artisantg.com/itemimages/keysight_u4305b_view3_202612714109.jpg>
- <https://www.artisantg.com/itemimages/keysight_u4305b_view4_202612714109.jpg>
- <https://www.artisantg.com/itemimages/keysight_u4305b_view5_202612714109.jpg>
