Candidate PCI devices with modem chips are: 04:08.0 Serial controller: U.S. Robotics Device 0152 (rev 02) 00:10.1 Audio device: NVIDIA Corporation MCP51 High Definition Audio (rev a2) 01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1) High Definition Audio cards can host modem chips. For candidate card in slot 04:08.0, firmware information and bootup diagnostics are: PCI slot PCI ID SubsystemID Name ---------- --------- --------- -------------- 04:08.0 16ec:0152 13a8:0128 Serial controller: U.S. Robotics Device 0152 Modem interrupt assignment and sharing: 16: 22650 0 IO-APIC-fasteoi snd_hda_intel, nvidia --- Bootup diagnostics for card in PCI slot 04:08.0 ---- [ 0.224161] pci 0000:04:08.0: [16ec:0152] type 0 class 0x000700 [ 0.224175] pci 0000:04:08.0: reg 10: [mem 0xcfeff000-0xcfeff3ff] [ 0.580338] serial 0000:04:08.0: PCI INT A -> Link[APC1] -> GSI 16 (level, low) -> IRQ 16 [ 0.580361] serial 0000:04:08.0: PCI INT A disabled The PCI slot 04:08.0 of the modem card may be disabled early in a bootup process, but then enabled later. If modem drivers load but the modem is not responsive, read DOCs/Bootup.txt about possible fixes. Send dmesg.txt along with ModemData.txt to discuss@xxxxxxxxxxxxx if help is needed.