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How to Convert from IDE (DMA mode 2) to IDE (UDMA-66)?
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How to Convert from IDE (DMA mode 2) to IDE (UDMA-66)?

Learn how to convert data transfer units between IDE (DMA mode 2) and IDE (UDMA-66), two legacy PATA transfer modes used in configuring and diagnosing older storage devices.

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

IDE (DMA mode 2) to IDE (UDMA-66) Conversion Table

IDE (DMA mode 2) IDE (UDMA-66)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
IDE (DMA mode 2) to IDE (UDMA-66) Conversion Table
IDE (DMA mode 2) IDE (UDMA-66)

Explore More Data Transfer Units Converter

  1. How to convert from bit/second [b/s] to IDE (DMA mode 2)?
  2. How to convert from IDE (DMA mode 2) to bit/second [b/s]?
  3. How to convert from byte/second [B/s] to IDE (DMA mode 2)?
  4. How to convert from IDE (DMA mode 2) to byte/second [B/s]?
  5. How to convert from kilobit/second (SI def.) to IDE (DMA mode 2)?
  6. How to convert from IDE (DMA mode 2) to kilobit/second (SI def.)?
  7. How to convert from kilobyte/second (SI def.) to IDE (DMA mode 2)?
  8. How to convert from IDE (DMA mode 2) to kilobyte/second (SI def.)?
  9. How to convert from kilobit/second [kb/s] to IDE (DMA mode 2)?
  10. How to convert from IDE (DMA mode 2) to kilobit/second [kb/s]?
  11. How to convert from kilobyte/second [kB/s] to IDE (DMA mode 2)?
  12. How to convert from IDE (DMA mode 2) to kilobyte/second [kB/s]?
  13. How to convert from megabit/second (SI def.) to IDE (DMA mode 2)?
  14. How to convert from IDE (DMA mode 2) to megabit/second (SI def.)?
  15. How to convert from megabyte/second (SI def.) to IDE (DMA mode 2)?
  16. How to convert from IDE (DMA mode 2) to megabyte/second (SI def.)?
  17. How to convert from megabit/second [Mb/s] to IDE (DMA mode 2)?
  18. How to convert from IDE (DMA mode 2) to megabit/second [Mb/s]?
  19. How to convert from megabyte/second [MB/s] to IDE (DMA mode 2)?
  20. How to convert from IDE (DMA mode 2) to megabyte/second [MB/s]?
  21. How to convert from gigabit/second (SI def.) to IDE (DMA mode 2)?
  22. How to convert from IDE (DMA mode 2) to gigabit/second (SI def.)?
  23. How to convert from gigabyte/second (SI def.) to IDE (DMA mode 2)?
  24. How to convert from IDE (DMA mode 2) to gigabyte/second (SI def.)?
  25. How to convert from gigabit/second [Gb/s] to IDE (DMA mode 2)?
  26. How to convert from IDE (DMA mode 2) to gigabit/second [Gb/s]?
  27. How to convert from gigabyte/second [GB/s] to IDE (DMA mode 2)?
  28. How to convert from IDE (DMA mode 2) to gigabyte/second [GB/s]?
  29. How to convert from terabit/second (SI def.) to IDE (DMA mode 2)?
  30. How to convert from IDE (DMA mode 2) to terabit/second (SI def.)?
  31. How to convert from terabyte/second (SI def.) to IDE (DMA mode 2)?
  32. How to convert from IDE (DMA mode 2) to terabyte/second (SI def.)?
  33. How to convert from terabit/second [Tb/s] to IDE (DMA mode 2)?
  34. How to convert from IDE (DMA mode 2) to terabit/second [Tb/s]?
  35. How to convert from terabyte/second [TB/s] to IDE (DMA mode 2)?
  36. How to convert from IDE (DMA mode 2) to terabyte/second [TB/s]?
  37. How to convert from ethernet to IDE (DMA mode 2)?
  38. How to convert from IDE (DMA mode 2) to ethernet?
  39. How to convert from ethernet (fast) to IDE (DMA mode 2)?
  40. How to convert from IDE (DMA mode 2) to ethernet (fast)?
  41. How to convert from ethernet (gigabit) to IDE (DMA mode 2)?
  42. How to convert from IDE (DMA mode 2) to ethernet (gigabit)?
  43. How to convert from OC1 to IDE (DMA mode 2)?
  44. How to convert from IDE (DMA mode 2) to OC1?
  45. How to convert from OC3 to IDE (DMA mode 2)?
  46. How to convert from IDE (DMA mode 2) to OC3?
  47. How to convert from OC12 to IDE (DMA mode 2)?
  48. How to convert from IDE (DMA mode 2) to OC12?
  49. How to convert from OC24 to IDE (DMA mode 2)?
  50. How to convert from IDE (DMA mode 2) to OC24?
  51. How to convert from OC48 to IDE (DMA mode 2)?
  52. How to convert from IDE (DMA mode 2) to OC48?
  53. How to convert from OC192 to IDE (DMA mode 2)?
  54. How to convert from IDE (DMA mode 2) to OC192?
  55. How to convert from OC768 to IDE (DMA mode 2)?
  56. How to convert from IDE (DMA mode 2) to OC768?
  57. How to convert from ISDN (single channel) to IDE (DMA mode 2)?
  58. How to convert from IDE (DMA mode 2) to ISDN (single channel)?
  59. How to convert from ISDN (dual channel) to IDE (DMA mode 2)?
  60. How to convert from IDE (DMA mode 2) to ISDN (dual channel)?
  61. How to convert from modem (110) to IDE (DMA mode 2)?
  62. How to convert from IDE (DMA mode 2) to modem (110)?
  63. How to convert from modem (300) to IDE (DMA mode 2)?
  64. How to convert from IDE (DMA mode 2) to modem (300)?
  65. How to convert from modem (1200) to IDE (DMA mode 2)?
  66. How to convert from IDE (DMA mode 2) to modem (1200)?
  67. How to convert from modem (2400) to IDE (DMA mode 2)?
  68. How to convert from IDE (DMA mode 2) to modem (2400)?
  69. How to convert from modem (9600) to IDE (DMA mode 2)?
  70. How to convert from IDE (DMA mode 2) to modem (9600)?
  71. How to convert from modem (14.4k) to IDE (DMA mode 2)?
  72. How to convert from IDE (DMA mode 2) to modem (14.4k)?
  73. How to convert from modem (28.8k) to IDE (DMA mode 2)?
  74. How to convert from IDE (DMA mode 2) to modem (28.8k)?
  75. How to convert from modem (33.6k) to IDE (DMA mode 2)?
  76. How to convert from IDE (DMA mode 2) to modem (33.6k)?
  77. How to convert from modem (56k) to IDE (DMA mode 2)?
  78. How to convert from IDE (DMA mode 2) to modem (56k)?
  79. How to convert from SCSI (Async) to IDE (DMA mode 2)?
  80. How to convert from IDE (DMA mode 2) to SCSI (Async)?
  81. How to convert from SCSI (Sync) to IDE (DMA mode 2)?
  82. How to convert from IDE (DMA mode 2) to SCSI (Sync)?
  83. How to convert from SCSI (Fast) to IDE (DMA mode 2)?
  84. How to convert from IDE (DMA mode 2) to SCSI (Fast)?
  85. How to convert from SCSI (Fast Ultra) to IDE (DMA mode 2)?
  86. How to convert from IDE (DMA mode 2) to SCSI (Fast Ultra)?
  87. How to convert from SCSI (Fast Wide) to IDE (DMA mode 2)?
  88. How to convert from IDE (DMA mode 2) to SCSI (Fast Wide)?
  89. How to convert from SCSI (Fast Ultra Wide) to IDE (DMA mode 2)?
  90. How to convert from IDE (DMA mode 2) to SCSI (Fast Ultra Wide)?
  91. How to convert from SCSI (Ultra-2) to IDE (DMA mode 2)?
  92. How to convert from IDE (DMA mode 2) to SCSI (Ultra-2)?
  93. How to convert from SCSI (Ultra-3) to IDE (DMA mode 2)?
  94. How to convert from IDE (DMA mode 2) to SCSI (Ultra-3)?
  95. How to convert from SCSI (LVD Ultra80) to IDE (DMA mode 2)?
  96. How to convert from IDE (DMA mode 2) to SCSI (LVD Ultra80)?
  97. How to convert from SCSI (LVD Ultra160) to IDE (DMA mode 2)?
  98. How to convert from IDE (DMA mode 2) to SCSI (LVD Ultra160)?
  99. How to convert from IDE (PIO mode 0) to IDE (DMA mode 2)?
  100. How to convert from IDE (DMA mode 2) to IDE (PIO mode 0)?
  101. How to convert from IDE (PIO mode 1) to IDE (DMA mode 2)?
  102. How to convert from IDE (DMA mode 2) to IDE (PIO mode 1)?
  103. How to convert from IDE (PIO mode 2) to IDE (DMA mode 2)?
  104. How to convert from IDE (DMA mode 2) to IDE (PIO mode 2)?
  105. How to convert from IDE (PIO mode 3) to IDE (DMA mode 2)?
  106. How to convert from IDE (DMA mode 2) to IDE (PIO mode 3)?
  107. How to convert from IDE (PIO mode 4) to IDE (DMA mode 2)?
  108. How to convert from IDE (DMA mode 2) to IDE (PIO mode 4)?
  109. How to convert from IDE (DMA mode 0) to IDE (DMA mode 2)?
  110. How to convert from IDE (DMA mode 2) to IDE (DMA mode 0)?
  111. How to convert from IDE (DMA mode 1) to IDE (DMA mode 2)?
  112. How to convert from IDE (DMA mode 2) to IDE (DMA mode 1)?
  113. How to convert from IDE (UDMA mode 0) to IDE (DMA mode 2)?
  114. How to convert from IDE (DMA mode 2) to IDE (UDMA mode 0)?
  115. How to convert from IDE (UDMA mode 1) to IDE (DMA mode 2)?
  116. How to convert from IDE (DMA mode 2) to IDE (UDMA mode 1)?
  117. How to convert from IDE (UDMA mode 2) to IDE (DMA mode 2)?
  118. How to convert from IDE (DMA mode 2) to IDE (UDMA mode 2)?
  119. How to convert from IDE (UDMA mode 3) to IDE (DMA mode 2)?
  120. How to convert from IDE (DMA mode 2) to IDE (UDMA mode 3)?
  121. How to convert from IDE (UDMA mode 4) to IDE (DMA mode 2)?
  122. How to convert from IDE (DMA mode 2) to IDE (UDMA mode 4)?
  123. How to convert from IDE (UDMA-33) to IDE (DMA mode 2)?
  124. How to convert from IDE (DMA mode 2) to IDE (UDMA-33)?
  125. How to convert from IDE (UDMA-66) to IDE (DMA mode 2)?
  126. How to convert from IDE (DMA mode 2) to IDE (UDMA-66)?
  127. How to convert from USB to IDE (DMA mode 2)?
  128. How to convert from IDE (DMA mode 2) to USB?
  129. How to convert from firewire (IEEE-1394) to IDE (DMA mode 2)?
  130. How to convert from IDE (DMA mode 2) to firewire (IEEE-1394)?
  131. How to convert from T0 (payload) to IDE (DMA mode 2)?
  132. How to convert from IDE (DMA mode 2) to T0 (payload)?
  133. How to convert from T0 (B8ZS payload) to IDE (DMA mode 2)?
  134. How to convert from IDE (DMA mode 2) to T0 (B8ZS payload)?
  135. How to convert from T1 (signal) to IDE (DMA mode 2)?
  136. How to convert from IDE (DMA mode 2) to T1 (signal)?
  137. How to convert from T1 (payload) to IDE (DMA mode 2)?
  138. How to convert from IDE (DMA mode 2) to T1 (payload)?
  139. How to convert from T1Z (payload) to IDE (DMA mode 2)?
  140. How to convert from IDE (DMA mode 2) to T1Z (payload)?
  141. How to convert from T1C (signal) to IDE (DMA mode 2)?
  142. How to convert from IDE (DMA mode 2) to T1C (signal)?
  143. How to convert from T1C (payload) to IDE (DMA mode 2)?
  144. How to convert from IDE (DMA mode 2) to T1C (payload)?
  145. How to convert from T2 (signal) to IDE (DMA mode 2)?
  146. How to convert from IDE (DMA mode 2) to T2 (signal)?
  147. How to convert from T3 (signal) to IDE (DMA mode 2)?
  148. How to convert from IDE (DMA mode 2) to T3 (signal)?
  149. How to convert from T3 (payload) to IDE (DMA mode 2)?
  150. How to convert from IDE (DMA mode 2) to T3 (payload)?
  151. How to convert from T3Z (payload) to IDE (DMA mode 2)?
  152. How to convert from IDE (DMA mode 2) to T3Z (payload)?
  153. How to convert from T4 (signal) to IDE (DMA mode 2)?
  154. How to convert from IDE (DMA mode 2) to T4 (signal)?
  155. How to convert from E.P.T.A. 1 (signal) to IDE (DMA mode 2)?
  156. How to convert from IDE (DMA mode 2) to E.P.T.A. 1 (signal)?
  157. How to convert from E.P.T.A. 1 (payload) to IDE (DMA mode 2)?
  158. How to convert from IDE (DMA mode 2) to E.P.T.A. 1 (payload)?
  159. How to convert from E.P.T.A. 2 (signal) to IDE (DMA mode 2)?
  160. How to convert from IDE (DMA mode 2) to E.P.T.A. 2 (signal)?
  161. How to convert from E.P.T.A. 2 (payload) to IDE (DMA mode 2)?
  162. How to convert from IDE (DMA mode 2) to E.P.T.A. 2 (payload)?
  163. How to convert from E.P.T.A. 3 (signal) to IDE (DMA mode 2)?
  164. How to convert from IDE (DMA mode 2) to E.P.T.A. 3 (signal)?
  165. How to convert from E.P.T.A. 3 (payload) to IDE (DMA mode 2)?
  166. How to convert from IDE (DMA mode 2) to E.P.T.A. 3 (payload)?
  167. How to convert from H0 to IDE (DMA mode 2)?
  168. How to convert from IDE (DMA mode 2) to H0?
  169. How to convert from H11 to IDE (DMA mode 2)?
  170. How to convert from IDE (DMA mode 2) to H11?
  171. How to convert from H12 to IDE (DMA mode 2)?
  172. How to convert from IDE (DMA mode 2) to H12?
  173. How to convert from Virtual Tributary 1 (signal) to IDE (DMA mode 2)?
  174. How to convert from IDE (DMA mode 2) to Virtual Tributary 1 (signal)?
  175. How to convert from Virtual Tributary 1 (payload) to IDE (DMA mode 2)?
  176. How to convert from IDE (DMA mode 2) to Virtual Tributary 1 (payload)?
  177. How to convert from Virtual Tributary 2 (signal) to IDE (DMA mode 2)?
  178. How to convert from IDE (DMA mode 2) to Virtual Tributary 2 (signal)?
  179. How to convert from Virtual Tributary 2 (payload) to IDE (DMA mode 2)?
  180. How to convert from IDE (DMA mode 2) to Virtual Tributary 2 (payload)?
  181. How to convert from Virtual Tributary 6 (signal) to IDE (DMA mode 2)?
  182. How to convert from IDE (DMA mode 2) to Virtual Tributary 6 (signal)?
  183. How to convert from Virtual Tributary 6 (payload) to IDE (DMA mode 2)?
  184. How to convert from IDE (DMA mode 2) to Virtual Tributary 6 (payload)?
  185. How to convert from STS1 (signal) to IDE (DMA mode 2)?
  186. How to convert from IDE (DMA mode 2) to STS1 (signal)?
  187. How to convert from STS1 (payload) to IDE (DMA mode 2)?
  188. How to convert from IDE (DMA mode 2) to STS1 (payload)?
  189. How to convert from STS3 (signal) to IDE (DMA mode 2)?
  190. How to convert from IDE (DMA mode 2) to STS3 (signal)?
  191. How to convert from STS3 (payload) to IDE (DMA mode 2)?
  192. How to convert from IDE (DMA mode 2) to STS3 (payload)?
  193. How to convert from STS3c (signal) to IDE (DMA mode 2)?
  194. How to convert from IDE (DMA mode 2) to STS3c (signal)?
  195. How to convert from STS3c (payload) to IDE (DMA mode 2)?
  196. How to convert from IDE (DMA mode 2) to STS3c (payload)?
  197. How to convert from STS12 (signal) to IDE (DMA mode 2)?
  198. How to convert from IDE (DMA mode 2) to STS12 (signal)?
  199. How to convert from STS24 (signal) to IDE (DMA mode 2)?
  200. How to convert from IDE (DMA mode 2) to STS24 (signal)?
  201. How to convert from STS48 (signal) to IDE (DMA mode 2)?
  202. How to convert from IDE (DMA mode 2) to STS48 (signal)?
  203. How to convert from STS192 (signal) to IDE (DMA mode 2)?
  204. How to convert from IDE (DMA mode 2) to STS192 (signal)?
  205. How to convert from STM-1 (signal) to IDE (DMA mode 2)?
  206. How to convert from IDE (DMA mode 2) to STM-1 (signal)?
  207. How to convert from STM-4 (signal) to IDE (DMA mode 2)?
  208. How to convert from IDE (DMA mode 2) to STM-4 (signal)?
  209. How to convert from STM-16 (signal) to IDE (DMA mode 2)?
  210. How to convert from IDE (DMA mode 2) to STM-16 (signal)?
  211. How to convert from STM-64 (signal) to IDE (DMA mode 2)?
  212. How to convert from IDE (DMA mode 2) to STM-64 (signal)?

What Is This Tool?

This converter helps translate data transfer values from IDE (DMA mode 2) to IDE (UDMA-66), enabling users to compare and understand different legacy PATA transfer modes used in older computer hardware.

How to Use This Tool?

  • Enter the value in IDE (DMA mode 2) units you want to convert
  • Select IDE (UDMA-66) as the target unit
  • Click the convert button to get the equivalent value in IDE (UDMA-66)
  • Use the result to evaluate data transfer performance or compatibility

Key Features

  • Converts values between IDE (DMA mode 2) and IDE (UDMA-66) data transfer units
  • Supports legacy PATA/IDE transfer mode comparisons
  • Simple web-based interface for quick conversions
  • Useful for configuring or diagnosing older IDE hard drives and optical drives

Examples

  • 1 IDE (DMA mode 2) converts approximately to 0.2515 IDE (UDMA-66)
  • 4 IDE (DMA mode 2) equals about 1.006 IDE (UDMA-66), calculated as 4 × 0.2515151515

Common Use Cases

  • Configuring legacy PATA hard drives using DMA to improve transfer speeds
  • Firmware or BIOS setup to select appropriate IDE transfer modes for compatibility
  • Benchmarking and troubleshooting legacy IDE storage via transfer mode diagnostics
  • Understanding burst throughput capabilities of older PATA devices

Tips & Best Practices

  • Ensure hardware and controllers support the chosen IDE transfer modes
  • Use appropriate 80-conductor PATA cables when working with UDMA-66 mode
  • Consider device and system limitations when interpreting transfer rates
  • Use this converter to aid legacy system maintenance and driver development

Limitations

  • Both IDE (DMA mode 2) and IDE (UDMA-66) are outdated compared to modern SATA and NVMe standards
  • Actual throughput may vary due to hardware, cabling quality, and controller capabilities
  • Conversion only applies to legacy PATA/IDE systems with the required hardware and cabling

Frequently Asked Questions

What is IDE (DMA mode 2)?
IDE (DMA mode 2) is a Parallel ATA data transfer mode that allows direct memory access with less CPU usage, used in older PATA/IDE storage devices.

What defines IDE (UDMA-66)?
IDE (UDMA-66), also known as Ultra DMA Mode 4 or ATA-66, is a Parallel ATA mode offering higher transfer rates and requires an 80-conductor cable.

Why convert between these two modes?
Converting helps compare performance and configure legacy drives or systems to ensure optimal data transfer settings and compatibility.

Key Terminology

IDE (DMA mode 2)
A legacy Parallel ATA mode allowing Multiword DMA Mode 2 data transfers with minimal CPU load on IDE devices.
IDE (UDMA-66)
A legacy Parallel ATA Ultra DMA mode (Mode 4) defining a max raw data rate of 66.7 MB/s, requiring an 80-conductor cable.
PATA
Parallel ATA, an older interface standard for connecting storage devices before SATA.

Quick Knowledge Check

What does IDE (DMA mode 2) mainly benefit compared to PIO modes?
What hardware requirement is specific to IDE (UDMA-66)?
Why is this conversion tool useful?

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