Startech.com
StarTech.com 1ft/30cm USB to Null Modem Serial Adapter Cable, COM Retention, FTDI, RS232, Changeable DB9 Nuts/Screws, Windows/macOS/Linux (1p1ffcn-usb-serial)
- SKU:
- 20989467
- MPN:
- 1p1ffcn-usb-serial
- Availability:
- Usually ships the same or next business day. In stock at our CA, IN, MS, NJ warehouses.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 02/18/2026 12:33:31 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 | and pay only $37.98 each 37.98 |
| Buy 3 | and pay only $36.15 each 36.15 |
| Buy 4 or above | and pay only $34.18 each 34.18 |
- Stock Update:
- 02/18/2026 12:33:31 AM PST
Description
This item is brand-new, factory sealed.
Add RS-232 DCE serial communications support to a desktop or laptop computer and resolve DCE/DTE conflicts directly without the need for additional cross-wired serial cables or adapters.
Serial Port Expansion
The 1-foot (30-centimeter) Null Modem USB Serial Adapter adds an RS-232 serial DB/DE-9 (female) connector to a desktop or laptop via a USB Type-A port. Secure the adapter to a serial device, using pre-installed and removable DB-9 nuts, or install the included slotted D-Sub thumbscrews for compatibility with other serial peripheral devices or cables.
LED Indicators
Data transmission and reception LED indicators on the adapter provide real-time monitoring of port activity. The USB LED indicates when the adapter has successfully enumerated on the desktop or laptop. All the LEDs aid with diagnostics and troubleshooting.
Seamless Connectivity
The adapter is compatible with Windows, macOS, ChromeOS, and Linux. Drivers automatically install to Windows 7 and newer versions, macOS 10.15 and above, and Linux. The USB to RS-232 adapter features COM retention, which automatically reassigns the COM port value if the cable is disconnected and reconnected, or if the system is rebooted.
Built To Last
The rugged TPE construction and Level-4 ESD protection (15kV air and 8kV contact) enhance the reliability and longevity of the USB to Serial Adapter. Copper shielding minimizes Electromagnetic and Radio Frequency Interference (EMI and RFI). Gold-plated connectors enhance signal conductivity.
Package Contents:
- USB to Serial Adapter
- 2 x DB9 Screws
- 1 x Quick-Start Guide
Features
- USB to Serial Adapter
- 2 x DB9 Screws
- 1 x Quick-Start Guide
Operating System Compatibility:
Windows 10
Windows 11
Windows 8
Windows 7
Mac OS
Linux
ChromeOS
Specs
| Physical Characteristics | |
| Shielding Material | Copper |
| Product Color | Black |
| Height | 0.6" |
| Color Family | Black |
| Width | 1.3" |
| Material Details | <p>Housing - TPE</p> |
| Warranty | |
| Limited Warranty | 2 Year |
| General Information | |
| Brand Name | StarTech.com |
| Manufacturer Website Address | http://www.startech.com |
| Marketing Information | Add RS-232 DCE serial communications support to a desktop or laptop computer and resolve DCE/DTE conflicts directly without the need for additional cross-wired serial cables or adapters. Serial Port Expansion The 1-foot (30-centimeter) Null Modem USB Serial Adapter adds an RS-232 serial DB/DE-9 (female) connector to a desktop or laptop via a USB Type-A port. Secure the adapter to a serial device, using pre-installed and removable DB-9 nuts, or install the included slotted D-Sub thumbscrews for compatibility with other serial peripheral devices or cables. LED Indicators Data transmission and reception LED indicators on the adapter provide real-time monitoring of port activity. The USB LED indicates when the adapter has successfully enumerated on the desktop or laptop. All the LEDs aid with diagnostics and troubleshooting. Seamless Connectivity The adapter is compatible with Windows, macOS, ChromeOS, and Linux. Drivers automatically install to Windows 7 and newer versions, macOS 10.15 and above, and Linux. The USB to RS-232 adapter features COM retention, which automatically reassigns the COM port value if the cable is disconnected and reconnected, or if the system is rebooted. Built To Last The rugged TPE construction and Level-4 ESD protection (15kV air and 8kV contact) enhance the reliability and longevity of the USB to Serial Adapter. Copper shielding minimizes Electromagnetic and Radio Frequency Interference (EMI and RFI). Gold-plated connectors enhance signal conductivity. |
| Product Type | Data Transfer Cable |
| Product Name | USB to Serial Adapter |
| Manufacturer | StarTech.com |
| Manufacturer Part Number | 1P1FFCN-USB-SERIAL |
| Packaged Quantity | 1 |
| Technical Information | |
| Connector Gender on First End | Male |
| Connector on Second End Details | 1 x 9 pin DB-9 RS-232 Serial - Female |
| Connector Plating | Gold |
| Cable Type | Serial/USB |
| Connector on First End Details | 1 x 4 pin USB 2.0 Type A - Male |
| Connector Type on First End | USB 2.0 Type A |
| Connector Type on Second End | DB-9 RS-232 Serial |
| Connector Gender on Second End | Female |
| Cable Length | 1 ft |
| Features |
|
| Shielding | Yes |
| Device Supported |
|
Warranty Information
