USB Serial Drivers for Apple's Mac OS X

High quality USB to serial drivers for Prolific PL-2303 and Winchiphead CH-340 / CH-341 / HL-340 for OS X. Easy and fast installation, signed kexts for El Capitan, Mavericks and Yosemite, and support for older OS X releases including PowerPC. Test if your device is supported, download: SerialDetect-2.5.zip (for OS X 10.5 and newer)

We offer a workaround driver for OS X 11 El Capitan. For information about 10.11 SDK based releases of our serial drivers subscribe to our El Capitan support mailing list: subscribe. Please note that the workaround El Capitan driver is unstable, and it may not work, or damage your system. We are working on decent 10.11 and 10.12 drivers based on the new USB stack .

  • PL-2303 Driver (V2.5.1)
  • RS-232 features: Reliable data transfer, baudrates up to 230400, Handshake signal control (CTS, DTR, etc), data bits (5, 6, 7, 8), Stop bits (1, 2), XON/XOFF support and sending break signals.
  • OS X Support: 10.11 (beta,signed), 10.10/10.9 (signed),
    10.8, 10.7, 10.6, 10.5 (ppc)
  • Easy installation
  • One year free access to updates
  • € 6.17 ($7.36±)
    ex VAT (7.47 / $8.90± inc VAT)
  • Download Now
  • HL-340 / CH-340 / CH-341 Driver (V2.5.1)
  • RS-232 features: Reliable data transfer, baudrates up to 230400, Handshake signal control (CTS, DTR, etc), data bits (5, 6, 7, 8), Stop bits (1, 2), XON/XOFF support and sending break signals.
  • OS X Support: 10.11 (beta,signed), 10.10/10.9 (signed),
    10.8, 10.7, 10.6, 10.5 (ppc)
  • Easy installation
  • One year free access to updates
  • € 6.17 ($7.36±)
    ex VAT (7.47 / $8.90± inc VAT)
  • Download Now

Contact us if you need an OEM driver license, including branding.