10GbE connection on iMac Pro only getting 1 Gbps

[pcorriv]

Forgive me for seeming to be one of the numerous users having difficulty achieving a 10 Gbps DIRECT connection speed between my QNAP NAS and iMac Pro. I have delved through the array of forum posts and great info with no luck. In a nutshell...

• Good news: I have a consistently working 1 Gbps connection between the NAS and iMac with QNAP's 10GbE adapter.
• Bad news: I can’t achieve a 10 Gbps connection with this adapter.

EQUIPMENT:

• QNAP TS-1673U (with 2 10GbE adapters)
• iMac Pro 2017 edition (10GbE ethernet interface) - OS 12.3.1
• Direct ethernet connection via Cat7 cable between one of QNAP’s 10GbE adapter and iMac’s ethernet port (no switch)
• Note: No other ethernet connection used with NAS. Wifi used for internet on the Mac with a different subnet. The NAS is local only.

SETTINGS:

• NAS IP address: 192.168.2.3
• NAS Subnet: 255.255.255.0
• No default gateway
• NAS Jumbo Frame set at 9000
• NAS Firmware: 5.0.0.2055

----

• iMac IP address: 192.168.2.11
• iMac Subnet: 255.255.255.0
• iMac Speed: 10Gbase-T
• iMac MTU: Jumbo (9000)

I must be missing something obvious and I appreciate any guidance on this. I have switched cables, rebooted the units, and even updated firmware…no progress. I have attached a screenshot below of what I see from the admin perspective within QNAP. Once again, thanks for any help!

10GbE Adapter Status.png

-Phil

[pcorriv]

The cause of the issue has been identified. I am using an SFP interface converter that only support gigabit speeds. I need to get the right converter to remedy the problem. Thanks.

[dosborne]

The cause of the issue has been identified. I am using an SFP interface converter that only support gigabit speeds. I need to get the right converter to remedy the problem. Thanks.

Hopefully an easy fix for you then and everything will magically start working with them corrected equipment.

Let us know when you have it in place.