# How to configure a USB ethernet adapter as LAN? **URL:** \ **Category:** Router\ **Created:** [June 12, 2023, 3:17am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448 "2023-06-12T03:17:11Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 12, 2023, 3:17am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/1 "2023-06-12T03:17:11Z")
I am using GL-AX1800 on the latest v4.2.1r4. I have plugged-in the USB adapter, it could be recognized, and used as WAN. I am trying to configure the router running in access point mode, while using the USB adapter as LAN port. Groupping usb0 into br-lan like this: ![Screenshot from 2023-06-12 11-08-29](https://forum-static.gl-inet.com/original/2X/8/8a680556b8e1a9848bd28789cb694e9c2a4c1464.png) The router won’t be able to get an IP address from DHCP (on another router). How to configure it correctly? Thanks. ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [June 12, 2023, 9:46am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/2 "2023-06-12T09:46:13Z")
What is the settings of the WAN interface? ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 12, 2023, 9:58am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/3 "2023-06-12T09:58:18Z")
I have factory-reset the router. After initialization, I have clicked “use WAN port as LAN”. Nothing more is modified. And then I have done the groupping of USB0 mentioned in the previos post. Thanks. ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [June 12, 2023, 10:18am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/4 "2023-06-12T10:18:28Z")
USB0 was in the WAN zone. So can you check the WAN interface configuration in luci? ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 12, 2023, 1:18pm UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/5 "2023-06-12T13:18:38Z")
I have connected LAN on GL-AX1800 to PC, and USB-LAN on GL-AX1800 to router with WAN. Enabled network from USB: ![Screenshot from 2023-06-12 21-16-21](https://forum-static.gl-inet.com/original/2X/f/fcfcaf3bebba97b9322308fb1ff7431c8b82d7d0.jpeg) The interface having USB0 should be TETHERING. ![Screenshot from 2023-06-12 21-15-53](https://forum-static.gl-inet.com/original/2X/9/966fb76f873d7ee47f85d85f43bb08ec6fdf47be.png) ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 12, 2023, 2:01pm UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/6 "2023-06-12T14:01:17Z")
Removing all other ETH, just having USB0 in BR-LAN, it can get IP from DHCP from another router: ![Screenshot from 2023-06-12 22-00-04](https://forum-static.gl-inet.com/original/2X/6/69d254cc94a89fa3b0ac08674c93671ccee2d08d.png) However, devices connecting to WIFI from GL-AX1800 cannot obtain any IP address, hence failing to connect to WIFI. ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 12, 2023, 2:52pm UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/7 "2023-06-12T14:52:16Z")
By the way, I have found 2.4Ghz WIFI is not connectable when USB adapter is connected. I have tried reset the router and played around with WIFI settings. Simply unplugging the USB adapter 2.4Ghz WIFI works again. Strange. ---
**Author:** ![groentjuh](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/g/f17d59/32.png) [@groentjuh](https://forum.gl-inet.com/u/groentjuh)\ **Post date:** [June 12, 2023, 3:02pm UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/8 "2023-06-12T15:02:05Z")
> [@y2kbug](#): > > Simply unplugging the USB adapter 2.4Ghz WIFI works again. USB 3.0 can create interference on 2.4 GHz according to [this whitepaper](https://www.usb.org/sites/default/files/327216.pdf). . ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 12, 2023, 3:13pm UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/9 "2023-06-12T15:13:41Z")
Oh yes, I have heard of this before. Totally forgot. Actually what I am trying to do is, using the USB as 2.5gbps ethernet adapter. Maybe I should wait GL publishing a new model… ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [June 14, 2023, 6:38am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/10 "2023-06-14T06:38:18Z")
You should remove usb0 from tethering in order to let it work as LAN. tethering interface is part of wan. ![image](https://forum-static.gl-inet.com/original/2X/a/a02218f546bff3fecb908c1fc7e3608b1b01355b.png) ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 14, 2023, 6:47am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/11 "2023-06-14T06:47:36Z")
I did removed THTHERING, and grouped USB0 into BR-LAN. Anyway the USB adapter interferes 2.4Ghz WIFI so it is meaningless to fix the setup. I have bought another GL-MT3000 (CN version). May I know the difference between the CN version and the international version? Thanks. ---
**Author:** ![groentjuh](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/g/f17d59/32.png) [@groentjuh](https://forum.gl-inet.com/u/groentjuh)\ **Post date:** [June 14, 2023, 7:12am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/12 "2023-06-14T07:12:09Z")
> [@y2kbug](#): > > May I know the difference between the CN version and the international version? > [@Statement on the purchase of products in mainland China](https://forum.gl-inet.com/t/statement-on-the-purchase-of-products-in-mainland-china/29186): > > Dear all, We regret to make the following annoucement. Due to current legal and policy restrictions in mainland China, we are unable to provide VPN and AdGuard Home features in our CN version products sold in mainland China. We understand that this may cause inconvenience, but we have to comply with local regulations. If you purchase GL.iNet devices from [tmall.com](http://tmall.com) or [taobao.com](http://taobao.com), your devices will be CN version. We have added this information to our product pages on [TMall](https://glinet.world.tmall.com/), our official store in… ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 14, 2023, 7:16am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/13 "2023-06-14T07:16:44Z")
I see. It is acceptable to me. The CN version is cheaper. ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [June 28, 2023, 3:24pm UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/14 "2023-06-28T15:24:17Z")
Since my last reply I decided to use GL-MT3000 instead of AX1800 for my 2.5gbps network. However, WIFI speed with VLAN configured on MT3000 is horribly slow (around 1mbps). So I am now trying to configure the USB adapter on AX1800 again. My plan is to use the USB adapter as LAN interface and provide access to 5ghz WIFI. I will use AXT1800 for 2.4ghz WIFI. I have done a factory reset on AX1800. Afterwards, I have deleted all interfaces and firewall zones. Interfaces (on AX1800) are then recreated as follow: ![image](https://forum-static.gl-inet.com/original/2X/6/667e7f933f369603bb181b78ddbccaf08ecf1b68.png) LAN, IOT and GUEST are from BR-USB, with USB0. ETH0LAN, ETH0IOT and ETH0GUEST are from BR-LAN, with ETH0 (WAN port on router). BR-USB (on AX1800): ![image](https://forum-static.gl-inet.com/original/2X/5/5048c6f32fb29936e80a6557d342948fb70e7e24.png) ![image](https://forum-static.gl-inet.com/original/2X/4/447d9d5199db10fcfa024fe89478bcaf32108d72.png) BR-LAN (on AX1800): ![image](https://forum-static.gl-inet.com/original/2X/0/097e6ec51b00b1393a0dad2031f139aff3f9ded1.png) ![image](https://forum-static.gl-inet.com/original/2X/a/a658e5fa27fad496cd87fab8b54953de77c325bd.png) Wireless configuration (on AX1800): ![image](https://forum-static.gl-inet.com/original/2X/0/047d16180900abc2928deb9084dfefc8c0e77131.png) ![image](https://forum-static.gl-inet.com/original/2X/b/b3c564120d48944690121a193216ec815f3eabc3.png) “5Ghz” WIFI is on USB0, and “5Ghz-Guest” is on ETH0. Other configuration (on AX1800): ![image](https://forum-static.gl-inet.com/original/2X/5/524eb7b8f29ae13638430e56203d62e17e0c000d.png) ![image](https://forum-static.gl-inet.com/original/2X/0/0e2a7eac87593128170091d6d932799e95795227.png) ![image](https://forum-static.gl-inet.com/original/2X/f/fd4c990f409eaab71190dbf40e9a496c70ea7ff9.png) ![image](https://forum-static.gl-inet.com/original/2X/e/e025b8f2dcecf8a6ade1a620aa49f60c87cc6330.png) ![image](https://forum-static.gl-inet.com/original/2X/a/a2f432201ffcb29b9a6fa28e65b57a3cacee9a97.png) ![image](https://forum-static.gl-inet.com/original/2X/5/5c8497c6e138a222b9bd4758366f718f87a16dfa.png) ![image](https://forum-static.gl-inet.com/original/2X/8/891fe5297627860a95cb98f6adba140824143fa8.png) ![image](https://forum-static.gl-inet.com/original/2X/3/3dc09a9b773892efd782f785fbfbc705df245ac6.png) Basically BR-USB and BR-LAN are same in configurations. Trying to connect to “5Ghz” WIFI from my phone, it won’t be connected. Even tried to manually assigned an IP, subnet mask, default gateway, it failed. But connecting to “5Ghz-Guest” just worked well. There was an IP assigned, and there was Internet access. I highly suspect there is something hardcoded behind the scene. So BR-USB does not work like BR-LAN. “bond0” and “bonding\_masters” are suspective. How should I configure the USB adapter working as a LAN port as if it is a eth\*? i.e. I want usb0 to be eth5 Thanks. ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [July 1, 2023, 1:03am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/15 "2023-07-01T01:03:26Z")
Excuse me @alzhao Do you think it is due to my configuration, or limitation to AX1800? Thanks. ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [July 1, 2023, 3:19am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/16 "2023-07-01T03:19:40Z")
I have just found after reboot with USB adapter plugged-in, two interfaces will be created automatically. ![image](https://forum-static.gl-inet.com/original/2X/c/c235274d7b1efa23d58116e527e9abf536317d1a.png) ![image](https://forum-static.gl-inet.com/original/2X/e/ea62c8c9cf63f2db34e38e4d55ace7c7c58532eb.png) ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [July 1, 2023, 5:25am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/17 "2023-07-01T05:25:32Z")
It should work. But have to try and find out the reason. Maybe some script is reversing the config. Maybe Check out mwan3 config. Or disable it completely. ---
**Author:** ![y2kbug](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/y2kbug/32/8491_2.png) [@y2kbug](https://forum.gl-inet.com/u/y2kbug)\ **Post date:** [July 1, 2023, 6:04am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/18 "2023-07-01T06:04:37Z")
I have tried to empty `/etc/config/mwan3` and rebooted the router, but does not work. It is the same case on both GL-AX1800 and GL-AXT1800. ---
**Author:** ![bruce](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bruce/32/35649_2.png) [@bruce](https://forum.gl-inet.com/u/bruce)\ **Post date:** [October 29, 2025, 4:22am UTC](https://forum.gl-inet.com/t/how-to-configure-a-usb-ethernet-adapter-as-lan/30448/19 "2025-10-29T04:22:47Z")