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Compaq 401922-001 Single Channel Ultra SCSI PCI Differential Adapter Card
- Interface Type: Ultra SCSI (SCSI-3)
- Channel: Single Channel
- Connector Type: Differential (e.g., VHDCI or similar for differential SCSI)
- Bus Interface: PCI (Peripheral Component Interconnect)
- Data Transfer Rate: Up to 20 MB/s (Ultra SCSI)
- Device Support: Supports up to 7 differential SCSI devices per channel
- Form Factor: Standard PCI card
- Purpose: Connects SCSI hard drives, tape drives, and other peripherals
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Product Overview
The Compaq 401922-001 is a Single Channel Ultra SCSI PCI Differential Adapter Card. It provides a high-speed interface for connecting SCSI devices to a computer system via a PCI slot.
Technical Information
| Product Type | SCSI Adapter Card |
| SCSI Standard | Ultra SCSI (SCSI-3) |
| Channel Type | Single Channel Differential |
| Bus Type | PCI |
Additional Specifications
| Max Data Transfer Rate | 20 MB/s |
| Device Support | 7 Differential SCSI Devices |
| Connector | Differential SCSI Connector |
| Manufacturer | Compaq |
Product Description
The Compaq 401922-001 is a PCI adapter card designed to provide a Single Channel Ultra SCSI interface for computer systems. Ultra SCSI, also known as Fast-20 or SCSI-3, offers a significant improvement in data transfer speeds over earlier SCSI standards, reaching up to 20 Megabytes per second (MB/s). This makes it suitable for connecting high-performance storage devices such as hard drives and tape drives where speed and reliability are critical. The card utilizes a differential signaling method for its SCSI connection. Differential SCSI offers better noise immunity and allows for longer cable lengths compared to single-ended SCSI, which is advantageous in server environments or systems where devices might be located at a distance from the adapter. The card typically features a specific connector type, such as a 68-pin VHDCI (Very High Density Interconnect Cable) connector, designed for differential SCSI cabling. As a single-channel adapter, it supports a bus that can accommodate up to seven differential SCSI devices. This allows for the connection of multiple storage devices, such as hard drives and tape backup units, to a single PCI slot. The card plugs into a standard PCI slot on the computer's motherboard, providing a robust and high-speed interface for legacy SCSI peripherals in server or workstation configurations.
