This products,
HPE H3C Compatible 10GBASE-T SFP+ Copper RJ45 30m Transceiver
is compatible with the transceiver HP NC523SFP 10Gb 2-port Server Adapter?
Best,
Francesco.
Hi Francesco,
Thanks for your question, you may find the supported transceiver on the HPE page https://h20195.www2.hpe.com/v2/gethtml.aspx?docname=c04111574 Listed as below.
HP BladeSystem c-Class 10GbE SFP+ to SFP+ 0.5m Direct Attach Copper Cable 487649-B21
HP BladeSystem c-Class 10GbE SFP+ to SFP+ 1m Direct Attach Copper Cable 487652-B21
HP BladeSystem c-Class 10GbE SFP+ to SFP+ 3m Direct Attach Copper Cable 487655-B21
HP BladeSystem c-Class 10GbE SFP+ to SFP+ 5m Direct Attach Copper Cable 537963-B21
HP BladeSystem c-Class 10GbE SFP+ to SFP+ 7m Direct Attach Copper Cable 487658-B21
HP BladeSystem c-Class 10Gb SFP+ SR Transceiver 455883-B21
HP BladeSystem c-Class 10Gb SFP+ LR Transceiver 455886-B21
HP BladeSystem c-Class 10Gb SFP+ LRM Transceiver 455889-B21
We suggest this 10G RJ45 SFP+ for your NC523SFP 10Gb 2-port Server Adapter.

