Online Data Transfer Units Converter
How to Convert from IDE (UDMA-66) to IDE (DMA mode 2)?

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

Convert data transfer rates between IDE (UDMA-66) and IDE (DMA mode 2) to better understand legacy PATA device performance and configuration.

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

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

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

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

Explore More Data Transfer Units Converter

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

What Is This Tool?

This tool helps convert data transfer units from IDE (UDMA-66) to IDE (DMA mode 2), facilitating the understanding and configuration of legacy PATA/IDE storage devices.

How to Use This Tool?

  • Enter the value in IDE (UDMA-66) units you wish to convert.
  • Select IDE (UDMA-66) as the source unit and IDE (DMA mode 2) as the target unit.
  • View the converted value representing Multiword DMA mode 2 equivalents.
  • Use the results to assist with hardware configuration or troubleshooting tasks.

Key Features

  • Converts between IDE (UDMA-66) and IDE (DMA mode 2) transfer modes.
  • Supports legacy PATA/IDE device data rate interpretation.
  • Provides examples for ease of understanding conversion results.
  • Helps in BIOS and driver configuration for optimal storage performance.

Examples

  • 1 IDE (UDMA-66) = 3.9759 IDE (DMA mode 2)
  • 5 IDE (UDMA-66) = 19.8795 IDE (DMA mode 2)

Common Use Cases

  • Specifying or verifying maximum burst throughput of PATA (IDE) hard drives and optical drives.
  • Configuring drive transfer modes in BIOS or legacy operating systems for PATA devices.
  • Diagnosing data transfer rates and CPU usage during legacy IDE storage benchmarking.
  • Firmware and device driver optimization on older PATA/IDE systems.

Tips & Best Practices

  • Ensure cable and device support the selected transfer mode for accurate interpretation.
  • Use conversions to balance performance and compatibility during BIOS or driver setup.
  • Apply this tool primarily for legacy PATA interfaces, not for modern storage standards.
  • Reference conversion results when troubleshooting transfer errors on legacy hardware.

Limitations

  • Applicable only to legacy Parallel ATA (PATA) interface modes, not SATA or NVMe.
  • Theoretical data rates may not reflect actual performance due to hardware and firmware constraints.
  • Conversion does not account for cable quality or system hardware limitations affecting transfer speeds.

Frequently Asked Questions

What is IDE (UDMA-66)?
IDE (UDMA-66), also known as Ultra DMA Mode 4 or ATA‑66, is a PATA transfer standard defining a maximum theoretical data rate of 66.7 megabytes per second requiring an 80-conductor PATA cable.

How does IDE (DMA mode 2) differ?
IDE (DMA mode 2) is a Multiword DMA mode allowing data transfer between an IDE device and system memory with less CPU involvement, improving throughput over older PIO modes.

Why convert between these modes?
Converting helps translate burst capabilities of legacy PATA devices into equivalent DMA transfer rates, aiding in system configuration, troubleshooting, and benchmarking.

Key Terminology

IDE (UDMA-66)
A Parallel ATA transfer mode offering up to 66.7 MB/s burst data rate requiring specific cable and device support.
IDE (DMA mode 2)
A Multiword DMA mode 2 enabling direct memory access transfers with minimal CPU intervention on legacy IDE devices.
PATA
Parallel ATA, an older standard interface for connecting storage devices such as hard drives and optical drives.

Quick Knowledge Check

Which cable type is required for IDE (UDMA-66) operation?
What advantage does IDE (DMA mode 2) provide compared to PIO modes?
This conversion tool is most relevant for which devices?