T9281B and J9281D are both SFP+ DAC cables with nearly identical specifications, making it difficult for users to choose between them. Moduletek Laboratory compares the two from three aspects: product description, appearance, and on-board identification, to help users better understand their differences.
1. Product Description
        TIn 2015, HPE acquired Aruba Networking (now HPE Aruba Networking), so there is a brand distinction between HPE J9281B and HPE Aruba J9281D. The specific description is as follows:
Table 1 Product Specifications Comparison of J9281B and J9281D
  Product name (SKU)
  Cable length
  Data rate
  HPE X24210G SFP+to SFP+1m DAC Cable (19281B)
  Aruba 10G SFP+to SFP+1m DAC Cable (J9281D)
  1m(3.28 ft)
  10 Gbps
  The specifications for Revision D transceiver products are the same as the specified Revision A,B,and C SKUs.
        The specifications for Revision D transceiver products are the same as those for Revision A, B, and C SKUs.
        The specific compatible models and system versions of J9281B/J9281D are not summarized here. For more information, please refer to the relevant documents on Aruba's official website: https://www.arubanetworks.com/techdocs/Switches/xcvrs/xcvr_guide/Content/Chp_sfp_plus/sfp-dac-mod-spe-com.htm
2. Module Appearance
        A comparison of the appearances of J9281B and J9281D sample modules shows some differences between the two, possibly due to different manufacturers.
Table 2 Appearance Comparison of J9281B and J9281D
Item
J9281B
J9281D
Label
Overall
Shell
3. Module Identification
        J9281B and J9281D were connected to an Aruba 8320 JL479A switch to check the module working status and identification information.
        Both J9281B and J9281D can link up normally on the Aruba 8320 JL479A switch and can be recognized by the switch, including module type, model, serial number, etc., with no alarm information.
Table 3 Module Identification Test Results of J9281B and J9281D
Test Item
J9281B
J9281D
LINK
Identify
        HPE J9281B is the Revision B version of the SFP+ DAC cable, and HPE Aruba J9281D is the Revision D version. J9281D is backward compatible with J9281B, and their main difference lies in the software version.
        Moduletek provides compatible products for J9281B/J9281D. We welcome your inquiries and orders.
        For further inquiries about the above content, please contact us at: sales@moduletek.com