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How to Log Into TP-Link TL-SG3226 with CH340 USB-RJ45-Console Cable

Connecting the TP-Link TL-SG3226 using the USB-RJ45 Console Cable with the CH340
chip on Ubuntu is straightforward; just install minicom. Linux Kernels have built-in
CH340/CH341 serial drivers since v2.6.24, or you can download the latest driver for manual
compilation and installation.

test-pc@test:/$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 004: ID 1a86:7523 QinHeng Electronics CH340 serial converter

test-pc@test:/$ sudo dmesg | grep ttyS*
[      0.7353217] printk: legacy console [tty0] enabled
[         2.752159] tty tty42: hash matches
[  906.590405] ch341-uart ttyUSB0: break control not supported, using simulated break
[   906.590577] usb 2-2.1: ch341-uart converter now attached to ttyUSB0

After confirming the product is recognized with lsusb, you can configure the serial tool.
On Ubuntu, it is recommended to use minicom. Installation method:
$ sudo apt-get install minicom. Once installed, configure minicom.

Configuration for TP-Link TL-SG3226

A - Serial Device : /dev/ttyUSB0
B - Lockfile Location : /var/lock
C - Callin Program :
D - Callout Program :
E - Bps/Par/Bits : 38400 8N1
F - Hardware Flow Control : No
G - Software Flow Control : No
H - RS485 Enable : No
I - RS485 Rts On Send : No
J - RS485 Rts After Send : No
K - RS485 Rx During Tx : No
L - RS485 Terminate Bus : No
M - RS485 Delay Rts Before : 0
N - RS485 Delay Rts After : 0

After configuration, save it, and you can use minicom to operate.

test-pc@test:/$ sudo minicom