Can't bring up WiFi interface in state DORMANT

I have an old MacMini from 2009 running Debian 12 (stable). Its built-in WiFi adapter seems to be quite slow since I get around 5 Mbit/s compared to 50 Mbit/s with a newer laptop (in the same location). I therefor bought a USB WiFi adapter which presents itself as [21658.544330] usb 1-7: new high-speed USB device number 18 using ehci-pci [21658.706136] usb 1-7: New USB device found, idVendor=0bda, idProduct=c811, bcdDevice= 2.00 [21658.706148] usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [21658.706152] usb 1-7: Product: 802.11ac NIC [21658.706155] usb 1-7: Manufacturer: Realtek [21658.706158] usb 1-7: SerialNumber: 123456 According to an answer on Ask Ubuntu the driver for this adapter is included in the Linux kernel from version 6.3, however, Debian 12 currently runs version 6.1 so I followed the instructions in the answer to install the driver from GitHub: https://askubuntu.com/a/1463799 After rebooting the computer the ip link command shows that the new WiFi interface is in a dormant state. I tried to bring it up but nothing changes. How do I enable the USB WiFi adapter and disable the build-in WiFi adapter? $ sudo ip link set wlx00e04c5cc5e9 up $ ip link 1: lo: mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: enp0s10: mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000 link/ether d4:9a:20:f8:dc:a8 brd ff:ff:ff:ff:ff:ff 3: wlan0: mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000 link/ether 90:84:0d:f3:85:7e brd ff:ff:ff:ff:ff:ff 4: wlx00e04c5cc5e9: mtu 1500 qdisc mq state DORMANT mode DORMANT group default qlen 1000 link/ether 7e:09:b0:4f:84:ee brd ff:ff:ff:ff:ff:ff permaddr 00:e0:4c:5c:c5:e9