Virtual COM port (VCP) drivers cause the USB device to appear as an additional COM port available to the PC. Application software can access the USB device.

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Where do I find working drivers for OSX 10.10 (Yosemite)? • I have OSX 10.10.3 on MBP11,2 • I downloaded OSX drivers from () • Unpacked the ZIP, mounted DMG file, installed using the PKG installer. • Restarted computer • I connected NodeMcu devkit v1.0 through USB 3.0 port There is a file/folder /Library/Extensions/SiLabsUSBDriver.kext, but no serial port available for the device. $ ls -lah /dev/cu* crw-rw-rw- 1 root wheel 18, 1 Jul 8 13:32 /dev/cu.Bluetooth-Incoming-Port crw-rw-rw- 1 root wheel 18, 3 Jul 8 13:32 /dev/cu.Bluetooth-Modem crw-rw-rw- 1 root wheel 18, 5 Jul 8 13:32 /dev/cu.DadaFon4-WirelessiAP $ ls -lah /dev/tty.* crw-rw-rw- 1 root wheel 18, 0 Jul 8 13:32 /dev/tty.Bluetooth-Incoming-Port crw-rw-rw- 1 root wheel 18, 2 Jul 8 13:32 /dev/tty.Bluetooth-Modem crw-rw-rw- 1 root wheel 18, 4 Jul 8 13:32 /dev/tty.DadaFon4-WirelessiAP No success with ESPlorer and Arduino IDE. Flipshare software for mac. EDIT 1 Apparently it works for some people (?), but not for me: EDIT 2: It looks like the kext isn't loaded? I am experiencing the same issue on OS X 10.11.5 (MacBook Pro (Retina, 15-inch, Mid 2014)), using a Wemos D1 Mini and an Amazon USB Cable. The kernel extension is loaded: > kextstat grep -i silabs 151 0 0xffffff7f832ab000 0x6000 0x6000 com.silabs.driver.CP210xVCPDriver (4.10.11) CF83A369-EA70-3E24-B8FE-7351DCF03430 But there is no /dev/tty.SLAB_USBtoUART: > ls tty.* tty.Bluetooth-Incoming-Port Under System Information the USB device (when attached) shows up as USB2.0-Serial under the USB 3.0 Bus tree: USB 3.0 Bus: Host Controller Driver: AppleUSBXHCILPTH PCI Device ID: 0x8c31 PCI Revision ID: 0x0005 PCI Vendor ID: 0x8086.

USB2.0-Serial: Product ID: 0x7523 Vendor ID: 0x1a86 Version: 2.54 Speed: Up to 12 Mb/sec Location ID: 0x14200000 / 12 Current Available (mA): 1000 Extra Operating Current (mA): 0 I have diff'd the results of ioreg as suggested above at gist'd at I am disinclined to install an unsigned kernel extension or otherwise not readily downloadable from a reputable vendor, particularly if it is reported to cause kernel panics. If someone runs into such an issue, really DO check many cables. I run into the exact same steps than and nothing worked.