# Cant install USB56KEMH2 FAX Modem on raspberry Pi5 Debian 12 **URL:** \ **Category:** General\ **Created:** [August 20, 2024, 2:08pm UTC](https://community.startech.com/t/cant-install-usb56kemh2-fax-modem-on-raspberry-pi5-debian-12/1225 "2024-08-20T14:08:03Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![JLoewner](https://avatars.discourse-cdn.com/v4/letter/j/a183cd/32.png) [@JLoewner](https://community.startech.com/u/JLoewner)\ **Post date:** [August 20, 2024, 2:08pm UTC](https://community.startech.com/t/cant-install-usb56kemh2-fax-modem-on-raspberry-pi5-debian-12/1225/1 "2024-08-20T14:08:03Z")
For days I tried to install your FAX modem for a HylaFaxServer. But I get stuck at the modem installation where the installation **hangs**. probemodem and also faxaddmodem failes the same way **strong text** Can you help me? JLoewner ---
**Author:** ![BrentD](https://yyz2.discourse-cdn.com/flex012/user_avatar/community.startech.com/brentd/32/22_2.png) [@BrentD](https://community.startech.com/u/BrentD)\ **Post date:** [August 20, 2024, 8:07pm UTC](https://community.startech.com/t/cant-install-usb56kemh2-fax-modem-on-raspberry-pi5-debian-12/1225/2 "2024-08-20T20:07:12Z")
Hello JLoewner - I hope you’re well! Fortunately, all Linux LTS kernels above version 3.16 ought to have driver support for the Conexant - CX93010-21Z chipset used in our modem natively. You can confirm that your installation of Debian is using an LTS kernel by using the ‘uname -r’ command in a terminal session, and comparing the kernel version to the list of LTS versions found here: [Linux kernel version history - Wikipedia](https://en.wikipedia.org/wiki/Linux_kernel_version_history). You may require assigning a COM port to the device after connecting, despite the driver being natively supported. You can use the following commands to do so: 1. Plug the CDC ACM modem to a Linux machine. 2. In the Terminal, type “modprobe acm” 3. Then type “mknod /dev/usb/ttyACM0 c 166 0” 4. Type “minicom –s” 5. Select “Serial port setup” and press Enter 6. Press “A” to select Serial Device and modify the string to /dev/usb/ttyACM0 7. Press Enter twice to go back to the Configuration window and select Exit 8. Modem should starts to initialize and ready to use If you are using a Linux kernel that is not an LTS version, I’d recommend testing the adapter in a supported LTS kernel or in a supported OS such as Windows 10 to ensure the hardware is working well. If you have any further concerns, we offer 24/5 support via phone at 1 800 265 1844 or by our support page (live-chat / email) here: [StarTech.com Support](https://www.startech.com/en-us/support). ---
**Author:** ![divad27182](https://yyz2.discourse-cdn.com/flex012/user_avatar/community.startech.com/divad27182/32/248_2.png) [@divad27182](https://community.startech.com/u/divad27182)\ **Post date:** [August 21, 2024, 9:38pm UTC](https://community.startech.com/t/cant-install-usb56kemh2-fax-modem-on-raspberry-pi5-debian-12/1225/3 "2024-08-21T21:38:33Z")
Unfortunately, StarTech apparently hasn’t updated their information in YEARS. If you have a udevd based system (you do), you should never need to do their steps 2 or 3. The notion of “LTS kernel” is probably wrong, as they say “kernels above version 3.16” (you are). The location of the serial device should be “/dev/ttyACM0”, unless you made it yourself. Having said all that, your issue is almost certainly after that. Presumably the HylaFax software found a modem and tried to talk to it (as if it didn’t, it shouldn’t have hung). I would try minicom as they have suggested and see if it responds to the AT command set. I’m not sure if baud rate will matter. (Having said this, I am ~~actually considering~~ buying one.) ---
**Author:** ![divad27182](https://yyz2.discourse-cdn.com/flex012/user_avatar/community.startech.com/divad27182/32/248_2.png) [@divad27182](https://community.startech.com/u/divad27182)\ **Post date:** [August 21, 2024, 10:00pm UTC](https://community.startech.com/t/cant-install-usb56kemh2-fax-modem-on-raspberry-pi5-debian-12/1225/4 "2024-08-21T22:00:52Z")
The one other thing you should be aware of: you will need CONFIG\_USB\_ACM configured in your kernel build. I would think the chances good for a stock Raspberry Pi build, but they have fooled me before.