[working] DS423+(geminilake) DSM7.1 and 7.2 working with cheap No Name 2,5gbe-Adapter

[Tomps1]

Description of the problem

Just for Information

Description of your products

DS423+ (250GB-R/W-SSD-Cache; 18GB RAM)
Linux Diskstation 4.4.180+ #42962 SMP Sat Apr 8 00:32:22 CST 2023 x86_64 GNU/Linux synology_geminilake_423+
- DSM 7.1.1-42962 Update 5
also working under DSM 7.2-64570 Update 1 (remove driver, update system, install 7.2 driver)

• XRR USB 3.0 auf RJ45: https://www.amazon.de/dp/B0B1QLTRJM?psc=1&ref=ppx_yo2ov_dt_b_product_details

Description of your environment

DS/usb2rj45 <---cat5e----> Qnap QSW-1105-5T <----cat5e---> rj45_2_usb_c/PC

Output of lsusb command

|__usb1          1d6b:0002:0404 09  2.00  480MBit/s 0mA 1IF  (Linux 4.4.180+ xhci-hcd xHCI Host Controller 0000:00:15.0) hub
  |__1-4         f400:f400:0100 00  2.00  480MBit/s 200mA 1IF  (Synology DiskStation 65002xxxxxxxxxxxxx)
|__usb2          1d6b:0003:0404 09  3.00 5000MBit/s 0mA 1IF  (Linux 4.4.180+ xhci-hcd xHCI Host Controller 0000:00:15.0) hub
  |__2-2         0bda:8156:3100 00  3.20 5000MBit/s 256mA 1IF  (Realtek USB 10/100/1G/2.5G LAN 0013000001)

Output of `iperf3``

Connecting to host diskstation, port 4711
[  4] local 2a02:810c:2c0:1faf:4098:bdd8:83f0:3cde port 57963 connected to 2a02:810c:2c0:1faf:ca4d:44ff:fe23:2239 port 4711
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   267 MBytes  2.24 Gbits/sec
[  4]   1.00-2.00   sec   260 MBytes  2.18 Gbits/sec
[  4]   2.00-3.00   sec   265 MBytes  2.22 Gbits/sec
[  4]   3.00-4.00   sec   271 MBytes  2.28 Gbits/sec
[  4]   4.00-5.00   sec   278 MBytes  2.33 Gbits/sec
[  4]   5.00-6.00   sec   271 MBytes  2.27 Gbits/sec
[  4]   6.00-7.00   sec   272 MBytes  2.28 Gbits/sec
[  4]   7.00-8.00   sec   275 MBytes  2.31 Gbits/sec
[  4]   8.00-9.00   sec   240 MBytes  2.02 Gbits/sec
[  4]   9.00-10.00  sec   277 MBytes  2.32 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  2.61 GBytes  2.25 Gbits/sec                  sender
[  4]   0.00-10.00  sec  2.61 GBytes  2.25 Gbits/sec                  receiver

iperf Done.

Connecting to host diskstation, port 4711
Reverse mode, remote host diskstation is sending
[  4] local 2a02:810c:2c0:1faf:4098:bdd8:83f0:3cde port 57972 connected to 2a02:810c:2c0:1faf:ca4d:44ff:fe23:2239 port 4711
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   238 MBytes  2.00 Gbits/sec
[  4]   1.00-2.00   sec   278 MBytes  2.33 Gbits/sec
[  4]   2.00-3.00   sec   261 MBytes  2.19 Gbits/sec
[  4]   3.00-4.00   sec   259 MBytes  2.17 Gbits/sec
[  4]   4.00-5.00   sec   275 MBytes  2.31 Gbits/sec
[  4]   5.00-6.00   sec   278 MBytes  2.33 Gbits/sec
[  4]   6.00-7.00   sec   275 MBytes  2.31 Gbits/sec
[  4]   7.00-8.00   sec   272 MBytes  2.28 Gbits/sec
[  4]   8.00-9.00   sec   269 MBytes  2.25 Gbits/sec
[  4]   9.00-10.00  sec   265 MBytes  2.23 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  2.61 GBytes  2.24 Gbits/sec    0             sender
[  4]   0.00-10.00  sec  2.61 GBytes  2.24 Gbits/sec                  receiver

iperf Done.