04:00.1 Serial controller: Oxford Semiconductor Ltd Device c101 (prog-if 02 [16550])
    Subsystem: Oxford Semiconductor Ltd Device c101
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin B routed to IRQ 44
    Region 0: I/O ports at c000 [size=8]
    Capabilities: <access denied>
    Kernel driver in use: serial

/dev/ttyS4, UART: 16950/954, Port: 0xc000, IRQ: 44