What is IDE (UDMA mode 4)?

IDE (UDMA mode 4), also called Ultra DMA/66, is a Parallel ATA transfer mode used in legacy IDE/ATA devices with a maximum theoretical throughput of about 66.7 MB/s requiring an 80-conductor IDE cable.

What does E.P.T.A. 2 (payload) represent?

E.P.T.A. 2 (payload) measures the amount of user data in a single E.P.T.A. 2 protocol message, defined by that protocol's specifications rather than any external standard.

Why convert from IDE (UDMA mode 4) to E.P.T.A. 2 (payload)?

The conversion helps translate raw data transfer rates from legacy IDE hardware into payload units used by the E.P.T.A. 2 protocol, supporting accurate throughput and latency analyses.

How to Convert from IDE (UDMA mode 4) to E.P.T.A. 2 (payload)?

This tool helps convert data transfer measurements from IDE (UDMA mode 4) units to E.P.T.A. 2 (payload) units, assisting with legacy hardware and specialized protocol analyses.

IDE (UDMA mode 4)

E.P.T.A. 2 (payload)

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

IDE (UDMA mode 4) to E.P.T.A. 2 (payload) Conversion Table

IDE (UDMA mode 4)	E.P.T.A. 2 (payload)

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 mode 4) to E.P.T.A. 2 (payload) Conversion Table
IDE (UDMA mode 4)	E.P.T.A. 2 (payload)

Explore More Data Transfer Units Converter

What Is This Tool?

This converter allows users to translate data transfer values from the IDE (UDMA mode 4) unit, a transfer mode for legacy IDE/ATA devices, into the E.P.T.A. 2 (payload) unit, which measures payload specific to the E.P.T.A. 2 data-transfer protocol.

How to Use This Tool?

Enter the value measured in IDE (UDMA mode 4) units
Select IDE (UDMA mode 4) as the source unit
Choose E.P.T.A. 2 (payload) as the target unit
Click the convert button to view the equivalent payload measurement
Use the results to support analysis or implementation tasks

Key Features

Converts IDE (UDMA mode 4) transfer rates to E.P.T.A. 2 protocol payload units
Supports measurement translation for legacy PC hardware and embedded systems
Facilitates throughput and latency analysis for specialized communication protocols
Includes examples for quick reference
Browser-based and easy to use without installation

Examples

2 IDE (UDMA mode 4) equals 137.5 E.P.T.A. 2 (payload)
0.5 IDE (UDMA mode 4) equals 34.375 E.P.T.A. 2 (payload)

Common Use Cases

Maintaining and benchmarking legacy PATA/IDE storage hardware
Analyzing throughput and latency for E.P.T.A. 2 data-transfer messages
Configuring DMA modes on legacy desktop or embedded systems
Estimating bandwidth for systems using E.P.T.A. 2 payload formats
Measuring and logging payload sizes in E.P.T.A. 2 protocol implementations

Tips & Best Practices

Verify hardware supports the IDE (UDMA mode 4) standard before using conversions
Use payload sizes for E.P.T.A. 2 only within the scope of its protocol context
Reference examples to confirm correct conversion values
Remember that conversions reflect protocol-specific equivalences, not universal data sizes
Avoid assuming interoperability due to E.P.T.A. 2's non-standard unit nature

Limitations

E.P.T.A. 2 (payload) lacks a broadly accepted external standard, limiting interoperability
IDE (UDMA mode 4) throughput depends on physical cabling and device capabilities
Conversions represent theoretical or protocol-specific equivalences, not exact universal data measurements

Frequently Asked Questions

What is IDE (UDMA mode 4)?: IDE (UDMA mode 4), also called Ultra DMA/66, is a Parallel ATA transfer mode used in legacy IDE/ATA devices with a maximum theoretical throughput of about 66.7 MB/s requiring an 80-conductor IDE cable.
What does E.P.T.A. 2 (payload) represent?: E.P.T.A. 2 (payload) measures the amount of user data in a single E.P.T.A. 2 protocol message, defined by that protocol's specifications rather than any external standard.
Why convert from IDE (UDMA mode 4) to E.P.T.A. 2 (payload)?: The conversion helps translate raw data transfer rates from legacy IDE hardware into payload units used by the E.P.T.A. 2 protocol, supporting accurate throughput and latency analyses.

Key Terminology

IDE (UDMA mode 4): A Parallel ATA transfer mode used in legacy IDE/ATA hardware, also known as Ultra DMA/66, enabling data transfers up to approximately 66.7 MB/s.
E.P.T.A. 2 (payload): A protocol-specific unit representing the payload data amount in a single E.P.T.A. 2 message, defined internally by the protocol.
Ultra DMA: An enhanced protocol for moving blocks of data between a drive and host interface, providing faster data transfer modes under the IDE/ATA standard.

Quick Knowledge Check

What kind of unit is IDE (UDMA mode 4)?

A data storage capacity unit

A Parallel ATA data transfer mode

A network data packet size

What does E.P.T.A. 2 (payload) measure?

The total data throughput of IDE devices

The amount of user data in an E.P.T.A. 2 protocol message

The cable length for IDE interfaces

Why is converting between these units useful?

To enforce universal data standards

To analyze throughput and latency in specialized protocols

To upgrade hardware cables

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