2 Port Professional FTDI CHIP USB to RS232 Serial Cable DB9 Serial Adapter Converter 9-Pin Male to Male with Thumbscrews (W/Thumbscrews, 2 RS232 Port)

Purchased for my tech department employees to use with laptops. Works perfectly on Windows 10 and 7 also seems to work fine with CentOS and Redhat Linux. We work on a lot of EMC, NetApp, Cisco...equipment testing using serial ports and this is great and easy to stick in a laptop case. They can more easily multitask by running multiple serial connections to multiple systems using Putty or Hyperterminal, etc. I advise you determine what comport each serial connection "head" is assigned in device manager because it gets confusing. We mark each serial head with a number that corresponds to the com port assigned by OS. Once you install the drivers each "head" is assigned a comport that does not change.

Works great. Prolific Driver disk provided helped to ease our setup. USB ports not labeled but can be identified using simple feedback/loopback connector. Would buy again.

Great USB to serial port hub. Works great for radio programming that still use serial cables.

All four ports were recognized on my Macintosh laptop without having to load drivers. I needed it to help set up and configure a set of Cicso switches and a NetApp cluster. I told several of my coworkers about it so they could get one for themselves!

When buying "generic" computer hardware like this I often wish someone would post some technical details so that I can make a better guess regarding whether or not it's going to work for me. I bought one of these for use on a RPi-based test fixture, and so far I have not run into problems. I did not need the driver disc at all -- just worked out of the box on Debian Linux (wheezy & stretch).`lsusb` outputs the following:Bus 003 Device 012: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) ICBus 003 Device 011: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) ICBus 003 Device 010: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) ICBus 003 Device 009: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) ICBus 003 Device 008: ID 1a40:0101 Terminus Technology Inc. HubThat is, it appears as a hub with with 4 FT232 converts connected. Here's the detailed output (lsusb -v -d 0403:6001):Bus 003 Device 012: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) ICDevice Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0403 Future Technology Devices International, Ltd idProduct 0x6001 FT232 USB-Serial (UART) IC bcdDevice 6.00 iManufacturer 1 FTDI iProduct 2 FT232R USB UART iSerial 3 AH05KCY0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 90mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 255 Vendor Specific Subclass bInterfaceProtocol 255 Vendor Specific Protocol iInterface 2 FT232R USB UART Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0Device Status: 0x0000 (Bus Powered)When the device is connected, the following output appeared in /var/log/messages:kernel: [1328570.600195] usb 3-2: new high-speed USB device number 8 using xhci_hcdkernel: [1328570.740504] usb 3-2: New USB device found, idVendor=1a40, idProduct=0101kernel: [1328570.740513] usb 3-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0kernel: [1328570.740518] usb 3-2: Product: USB 2.0 Hub [MTT]kernel: [1328570.741191] hub 3-2:1.0: USB hub foundkernel: [1328570.741226] hub 3-2:1.0: 4 ports detectedkernel: [1328571.048076] usb 3-2.1: new full-speed USB device number 9 using xhci_hcdkernel: [1328571.154958] usb 3-2.1: New USB device found, idVendor=0403, idProduct=6001kernel: [1328571.154967] usb 3-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3kernel: [1328571.154972] usb 3-2.1: Product: FT232R USB UARTkernel: [1328571.154976] usb 3-2.1: Manufacturer: FTDIkernel: [1328571.154979] usb 3-2.1: SerialNumber: AH05KEIJkernel: [1328571.158204] ftdi_sio 3-2.1:1.0: FTDI USB Serial Device converter detectedkernel: [1328571.158292] usb 3-2.1: Detected FT232RLkernel: [1328571.158742] usb 3-2.1: FTDI USB Serial Device converter now attached to ttyUSB0kernel: [1328571.256087] usb 3-2.2: new full-speed USB device number 10 using xhci_hcdkernel: [1328571.362674] usb 3-2.2: New USB device found, idVendor=0403, idProduct=6001kernel: [1328571.362684] usb 3-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3kernel: [1328571.362688] usb 3-2.2: Product: FT232R USB UARTkernel: [1328571.362692] usb 3-2.2: Manufacturer: FTDIkernel: [1328571.362696] usb 3-2.2: SerialNumber: A5062OYNkernel: [1328571.366032] ftdi_sio 3-2.2:1.0: FTDI USB Serial Device converter detectedkernel: [1328571.366124] usb 3-2.2: Detected FT232RLkernel: [1328571.366558] usb 3-2.2: FTDI USB Serial Device converter now attached to ttyUSB1kernel: [1328571.468091] usb 3-2.3: new full-speed USB device number 11 using xhci_hcdkernel: [1328571.594043] usb 3-2.3: New USB device found, idVendor=0403, idProduct=6001kernel: [1328571.594046] usb 3-2.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3kernel: [1328571.594047] usb 3-2.3: Product: FT232R USB UARTkernel: [1328571.594048] usb 3-2.3: Manufacturer: FTDIkernel: [1328571.594048] usb 3-2.3: SerialNumber: AH05KDAKkernel: [1328571.596873] ftdi_sio 3-2.3:1.0: FTDI USB Serial Device converter detectedkernel: [1328571.596890] usb 3-2.3: Detected FT232RLkernel: [1328571.597085] usb 3-2.3: FTDI USB Serial Device converter now attached to ttyUSB2kernel: [1328571.696086] usb 3-2.4: new full-speed USB device number 12 using xhci_hcdkernel: [1328571.803239] usb 3-2.4: New USB device found, idVendor=0403, idProduct=6001kernel: [1328571.803249] usb 3-2.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3kernel: [1328571.803254] usb 3-2.4: Product: FT232R USB UARTkernel: [1328571.803258] usb 3-2.4: Manufacturer: FTDIkernel: [1328571.803261] usb 3-2.4: SerialNumber: AH05KCY0kernel: [1328571.806660] ftdi_sio 3-2.4:1.0: FTDI USB Serial Device converter detectedkernel: [1328571.806745] usb 3-2.4: Detected FT232RLkernel: [1328571.807221] usb 3-2.4: FTDI USB Serial Device converter now attached to ttyUSB3

Tech Support not rated as it was not needed. Arrived on time and was an easy plug and play install

I bought two of these for a test at work. They almost never worked across multiple programs and computers. They were all connected to Applied Motion stepper drives, but we have never had issues with any other serial to USB converters.They also caused problems with other software. Not sure what kind of issue these had. I missed the return deadline by one day so we thought it was best to just throw them away to prevent any issues with future testing.All of our computers use Windows 7.

Works perfectly on a Dell Optiplex 960 SFF, running Linux kernel 3.2.0-4-amd64, acting as a terminal server for my Cisco lab environment. I am able to access the console ports of all four devices (2 Cisco switches and 2 Cisco routers) connected to this device.

I needed to have remote access to few network devices for remote staging and configuration and plugged into a compact PC running a remote access software on it, I now have access to 4 of routers and switches that I needed to configure. I am sure if you have more than 4 devices to handle, multiple of this product can be plugged into USB ports and it then replaces a terminal server. I really like this and will probably order another one.

Worked well

I plugged the device into the raspberry pi's usb port , searched /var/log/messages for the new interfaces and then connected to them using minicom (Terminal emulator)Recommended product works with Raspberian on a Pi nicely as a agret 4 port terminal server!

Very stable, was able to console into a switch, firewall and two controllers at the same time, very useful!

I have been looking for long finding a 4 ports serial to usb adapter. This one works like a charm with Linux, macOS and Windows. I have deployed a few network POPs with it since this purchase and no complains! Cable appear to be a bit fragile, but this should not be an issue if manipulated with care.