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SpeedSk8R

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  1. I have a Sabrent NT-SS5G Wired 5 Gigabit Ethernet Adapter (USB3) and a network that can do 2.5 and 5 Gbe so thought I'd see if it works with Armbian on a Nanopi M4V2. Using this distro: Armbian_22.05.4_Nanopim4v2_jammy_current_5.15.48_xfce_desktop Baseline using built-in 1 Gigabit ethernet port on Nanopi M4V2 board: iperf3 -t 60 -c faststore (1 stream) [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 6.63 GBytes 949 Mbits/sec 0 sender [ 5] 0.00-60.00 sec 6.63 GBytes 949 Mbits/sec receiver iperf3 -t 60 -P4 -c faststore (4 streams) [SUM] 0.00-60.00 sec 6.63 GBytes 950 Mbits/sec 176 sender [SUM] 0.00-60.00 sec 6.62 GBytes 948 Mbits/sec receiver Sabrent NT-SS5G attached to 2.5 Gbe port: iperf3 -t 60 -c faststore (1 stream) [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 16.5 GBytes 2.36 Gbits/sec 0 sender [ 5] 0.00-60.01 sec 16.5 GBytes 2.36 Gbits/sec receiver iperf3 -t 60 -P4 -c faststore (4 streams) [SUM] 0.00-60.00 sec 16.5 GBytes 2.36 Gbits/sec 0 sender [SUM] 0.00-60.05 sec 16.5 GBytes 2.36 Gbits/sec receiver 2.36 Gbits/sec is about the best I ever see using the 2.5 Gbe port on this server from other machines, so this is quite good. Note: as pointed out in several reviews of this Sabrent NT-SS5G, the USB 3 port (5 Gb max) limits the ethernet bandwidth to a lot less than 5 Gbe max. Sabrent NT-SS5G attached to 5 Gbe port: iperf3 -t 60 -c faststore (1 stream) [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 17.3 GBytes 2.47 Gbits/sec 0 sender [ 5] 0.00-60.01 sec 17.3 GBytes 2.47 Gbits/sec receiver iperf3 -t 60 -P4 -c faststore (4 streams) [SUM] 0.00-60.00 sec 17.7 GBytes 2.53 Gbits/sec 0 sender [SUM] 0.00-60.03 sec 17.7 GBytes 2.53 Gbits/sec receiver This is as expected, the USB3 (5 Gb max) interface of the Sabrent NT-SS5G limits the throughput. It is better than when connected to a 2.5 Gbe port, but not by much. It does seem to be pretty stable though. And the drivers were already included, I just plugged the device into a USB3 port and it autoconfigured, connection information showed 2.5 or 5 Gbe based on the speed of the port it was plugged into. Since this only gives a marginal improvement over the 2.5 Gbe USB adapters, probably save your money and buy a USB3 to 2.5 Gbe adapter, there are several on the market.
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