What is IDE (UDMA-66)?

IDE (UDMA-66), also known as Ultra DMA Mode 4 or ATA-66, is a Parallel ATA transfer mode specifying a theoretical maximum raw data rate of 66.7 megabytes per second, used mainly with legacy PATA storage devices.

Is H11 a standard unit for data transfer?

No, H11 is not a recognized or standard unit for data transfer; typical data transfer rates are measured in bits or bytes per second using common multiples and prefixes.

Why convert IDE (UDMA-66) to H11 if H11 is not standard?

Users convert to H11 mainly to translate or compare legacy PATA transfer mode speeds into H11 units for benchmarking or compatibility purposes despite H11’s non-standard status.

How to Convert from IDE (UDMA-66) to H11

Learn how to convert data transfer rates from IDE (UDMA-66), a legacy Parallel ATA mode, to H11 units using a straightforward conversion formula.

IDE (UDMA-66)

H11

Please check your input. It must be a valid numeric value.

IDE (UDMA-66) to H11 Conversion Table

IDE (UDMA-66)	H11

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

IDE (UDMA-66) to H11 Conversion Table
IDE (UDMA-66)	H11

Explore More Data Transfer Units Converter

What Is This Tool?

This unit converter facilitates the conversion of data transfer rates from IDE (UDMA-66), a legacy Parallel ATA transfer mode, into H11 units. While IDE (UDMA-66) defines a maximum theoretical data rate for older PATA devices, H11 is not a standard unit for data transfer. This tool helps translate transfer speeds between these units for benchmarking or compatibility assessments.

How to Use This Tool?

Enter the data transfer rate value in IDE (UDMA-66) units
Choose IDE (UDMA-66) as the source unit and H11 as the target unit
Click the convert button to see the corresponding value in H11
Use the results to compare or interpret transfer speeds across units

Key Features

Converts between IDE (UDMA-66) and H11 data transfer units
Applies a fixed conversion rate for accurate unit translation
Supports legacy PATA device performance analysis
Browser-based and easy to use without installation

Examples

2 IDE (UDMA-66) converts to 687.5 H11
0.5 IDE (UDMA-66) converts to 171.875 H11

Common Use Cases

Checking maximum burst throughput of legacy PATA storage devices
Configuring or verifying IDE drive transfer modes in BIOS or older systems
Benchmarking or comparing transfer rates for legacy hardware
Interpreting transfer speeds for research or maintenance of historical devices

Tips & Best Practices

Remember that H11 is not a standard data transfer unit and may lack practical use
Use standard units like MB/s or Mbps for meaningful performance analysis
Verify device support and cable requirements when working with IDE (UDMA-66)
Consider environmental and hardware factors that may affect actual speeds

Limitations

H11 is not a recognized or standard unit for data transfer measurements
Conversion results to H11 may not have standardized or practical meaning
IDE (UDMA-66)’s theoretical data rate may not reflect real-world performance
For accurate comparisons, rely on conventional units such as MB/s or Mbps

Frequently Asked Questions

What is IDE (UDMA-66)?: IDE (UDMA-66), also known as Ultra DMA Mode 4 or ATA-66, is a Parallel ATA transfer mode specifying a theoretical maximum raw data rate of 66.7 megabytes per second, used mainly with legacy PATA storage devices.
Is H11 a standard unit for data transfer?: No, H11 is not a recognized or standard unit for data transfer; typical data transfer rates are measured in bits or bytes per second using common multiples and prefixes.
Why convert IDE (UDMA-66) to H11 if H11 is not standard?: Users convert to H11 mainly to translate or compare legacy PATA transfer mode speeds into H11 units for benchmarking or compatibility purposes despite H11’s non-standard status.

Key Terminology

IDE (UDMA-66): A Parallel ATA transfer mode defining a maximum theoretical raw data rate of 66.7 MB/s for legacy PATA storage devices.
H11: A non-standard and unrecognized unit used here to represent data transfer quantities; conventional units are preferred.
Parallel ATA (PATA): An interface standard for connecting storage devices, commonly used in older computer systems.

Quick Knowledge Check

What does IDE (UDMA-66) specify in data transfer?

A network speed measurement

A theoretical maximum raw data rate for legacy PATA devices

A modern digital storage unit

Which of these is true about H11?

It is a standard unit for data transfer rates

It is not a recognized or standard unit for data transfer

It measures power consumption

Why might someone convert IDE (UDMA-66) to H11?

To measure internet connection speed

To compare legacy IDE transfer speeds in a different unit

To calculate storage capacity

Share Us

Similar Calculators

Online Density Units Converter Online Electric Resistance Units Converter Online Velocity Angular Units Converter Online Magnetic Flux Units Converter Online Luminance Units Converter