uslcom(4) Silicon Laboratories CP2101/CP2102/CP2103/CP2104/CP2105 based USB serial adapter


To compile this driver into the kernel, place the following lines in your kernel configuration file:
device usb device ucom device uslcom

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:



The driver supports Silicon Laboratories CP2101/CP2102/CP2103/CP2104/CP2105 based USB serial adapters.


The following devices should work with the driver:

  • AC-Services CAN, CIS-IBUS, IBUS and OBD interfaces
  • Aerocomm Radio
  • AKTACOM ACE-1001 cable
  • AMBER Wireless AMB2560
  • Arkham DS-101 Adapter
  • Argussoft ISP
  • Arygon Technologies Mifare RFID Reader
  • AVIT Research USB-TTL interface
  • B&G H3000 Data Cable
  • Balluff RFID reader
  • Baltech card reader
  • BEI USB VCP Sensor
  • Burnside Telecom Desktop Mobile
  • Crumb128 module
  • Clipsal 5000CT2, 5500PACA, 5500PCU, 560884, 5800PC, C5000CT2 and L51xx C-Bus Home Automation products
  • Commander 2 EDGE(GSM) Modem
  • Cygnal Fasttrax GPS and Debug adapter
  • DataApex MultiCOM USB to RS232 converter
  • Degree Controls USB adapter
  • DekTec DTA Plus VHF/UHF Booster
  • Dell DW700 GPS Receiver
  • Digianswer ZigBee/802.15.4 MAC
  • Dynastream ANT Development kits
  • Elan USBcount50, USBscope50, USBpulse100 and USBwave12
  • ELV USB-I2C interface
  • EMS C1007 HF RFID controller
  • Festo CPX-USB and CMSP interfaces
  • Gemalto Prox-PU/CU contactless card reader
  • Helicomm IP-Link 1220-DVM
  • IMS USB-RS422 adapter
  • Infinity GPS-MIC-1 Radio Monophone
  • INSYS Modem
  • IRZ SG-10 and MC35pu GSM/GPRS Modems
  • Jablotron PC-60B
  • Kamstrup M-Bus Master MultiPort 250D and Optical Eye/3 wire utility meter interfaces
  • Kyocera GPS
  • Link Instruments MS-019 and MS-028 Oscilloscope/Logic Analyzer/Pattern Generators
  • Lipowsky Baby-JTAG, Baby-LIN and HARP-1
  • MEI CashFlow SC and Series 2000 cash acceptors
  • MobiData GPRS USB Modems
  • MSD DashHawk
  • Multiplex RC adapter
  • Optris MSpro LT Thermometer
  • Owen AC4 USB-RS485 converter
  • Pirelli DP-L10 SIP phone
  • PLX CA-42 Phone cable
  • Pololu USB to Serial
  • Procyon AVS Mind Machine
  • Renesas RX-Stick for RX610
  • Siemens MC60 Cable
  • Silicon Laboratories generic CP2101/CP2102/CP2103/CP2104/CP2105 chips
  • Software Bisque Paramount ME
  • SPORTident BSM7-D USB
  • Suunto Sports Instrument
  • Syntech CipherLab USB Barcode Scanner
  • T-Com TC 300 SIP phone
  • Tams Master Easy Control
  • Telegesis ETRX2USB
  • Timewave HamLinkUSB
  • Tracient RFID Reader
  • Track Systems Traqmate
  • Vaisala USB Instrument cable
  • VStabi Controller
  • WAGO 750-923 USB Service Cable
  • WaveSense Jazz Blood Glucose Meter
  • WIENER Plein & Baus CML Data Logger, RCM Remote, and PL512 and MPOD PSUs
  • WMR RIGblaster Plug&Play and RIGtalk RT1
  • Zephyr Bioharness


The device driver first appeared in Ox 4.0 . The first Fx release to include it was Fx 7.1 .


The driver was written by An Jonathan Gray Aq [email protected] .