Online Data Transfer Units Converter
How to Convert from H12 to IDE (UDMA mode 4)?

How to Convert from H12 to IDE (UDMA mode 4)?

Learn how to convert H12, a vendor-specific identifier, to IDE (UDMA mode 4), a legacy data transfer mode standard. Understand use cases, features, and limitations of this unique conversion tool.

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

H12 to IDE (UDMA mode 4) Conversion Table

H12 IDE (UDMA mode 4)

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.
H12 to IDE (UDMA mode 4) Conversion Table
H12 IDE (UDMA mode 4)

Explore More Data Transfer Units Converter

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

What Is This Tool?

This converter transforms H12 values, which are vendor-specific or classification codes, into equivalent measures in IDE (UDMA mode 4), a recognized data transfer mode standard used in legacy Parallel ATA storage devices. It helps relate proprietary codes to actual data throughput rates.

How to Use This Tool?

  • Enter the value in H12 units you wish to convert
  • Select 'H12' as the input unit and 'IDE (UDMA mode 4)' as the output unit
  • Click the convert button to see the equivalent IDE transfer mode value
  • Use the converted value to understand or compare legacy hardware data rates

Key Features

  • Converts vendor or model specific H12 codes to IDE (UDMA mode 4) units
  • Supports interpretation of legacy data transfer rates in systems from the late 1990s and early 2000s
  • Browser-based tool requiring no installation
  • Allows quick mapping of proprietary identifiers to a well-known IDE transfer mode

Examples

  • Convert 10 H12: 10 × 0.0036363636 = 0.036363636 IDE (UDMA mode 4)
  • Convert 50 H12: 50 × 0.0036363636 = 0.18181818 IDE (UDMA mode 4)

Common Use Cases

  • Interpreting vendor-specific H12 identifiers in equipment documentation
  • Mapping internal codes or service classes to a known data transfer standard
  • Benchmarks and maintenance of legacy IDE storage devices
  • Data recovery and diagnostics on older desktop or embedded systems

Tips & Best Practices

  • Ensure you understand the context of H12 since it is not a standard unit
  • Use the conversion results primarily for legacy hardware or vendor-specific documentation
  • Avoid applying this conversion for unrelated or modern data transfer contexts
  • Double-check cable and hardware condition when interpreting IDE transfer rates

Limitations

  • H12 is not an officially recognized measurement and may vary by vendor or usage
  • IDE (UDMA mode 4) throughput is theoretical and influenced by physical hardware factors
  • Conversions are approximate and context-dependent
  • Using this tool outside the intended legacy equipment context can produce unreliable results

Frequently Asked Questions

What is H12 in data transfer measurements?
H12 is not a standardized unit for data transfer; it usually serves as a vendor-specific identifier or code rather than a physical measurement.

What does IDE (UDMA mode 4) represent?
IDE (UDMA mode 4) is a Parallel ATA transfer mode supporting data movement up to approximately 66.7 megabytes per second, using an 80-conductor IDE cable.

Can I use this converter for modern hardware?
This tool is designed for legacy hardware contexts and vendor-specific coding systems; applying it to modern equipment may yield inaccurate results.

Key Terminology

H12
A vendor- or product-specific code, not a standardized unit of data transfer rate.
IDE (UDMA mode 4)
A Parallel ATA transfer mode using Ultra DMA protocol capable of about 66.7 megabytes per second throughput with an 80-conductor cable.
Ultra DMA/66 (ATA-4)
Another name for IDE (UDMA mode 4), denoting the ATA standard supporting 66.7 MB/s data transfer.

Quick Knowledge Check

What type of unit is H12 mainly considered?
What is the approximate maximum throughput of IDE (UDMA mode 4)?
Why should conversion use be limited to legacy hardware?