Will a Cisco 10G DAC (SFP-H10GB-CU3M) or a Finisar 10G optic work in a Netgear M5300 1G SFP port?

All 10G ports on a Netgear M5300-28G3 were used, so the poster asked whether a Cisco 3 m SFP+ DAC (H10GB-CU3M) or Finisar FTLX8571D3BCL 10G SR modules could be used in the switch's 1G SFP ports to add another 10G-capable device at reduced speed. Hardware involved: Netgear M5300-28G3, Cisco SFP-H10GB-CU3M DAC, Finisar FTLX8571D3BCL.

• Hardware: Netgear M5300-28G3
• Transceivers: Cisco SFP-H10GB-CU3M DAC, Finisar FTLX8571D3BCL
• Form factor: SFP, SFP+, DAC

Symptoms / messages:

10G DAC in 1G port
speed mismatch