If you need to connect a PDA digital camera modem or an ISDN terminal with a serial port to your laptop or tablet then Tripp Lite's U209-005-DB25 USB-to-Serial Cable Adapter is a great choice. The U209-005-DB25 allows you to connect legacy RS232 peripherals with either a 9-pin DB9 or 25-pin DB25 connector to your computer's USB port. The U209-005-DB25 comes with USB A (Male) and DB9 (Male) connectors; the included DB9-to-DB25 cable adapter can be inserted onto the DB9 connector for use in USB-to-DB25 (M/M) connections. The cable is plug-and-play and requires no external power. The U209-005-DB25 supports data transfer rates up to 230 kbps and has a 1.52 m overall length. It is compatible with Windows Mac and Linux operating systems as well as Android tablets / phones with a USB Host Mode (OTG) cable (Tripp Lite U052-06N) and OS version 3.2 and above. Connect a RS232 serial device to the USB port on your computer Connectors: USB-A (M); DB25 (M); DB9 (M) No external power is required Supports data transfer rates up to 230 kbps Premium double-shielded cable with gold-plated contacts tinned copper braid and an aluminum Mylar foil shield that eliminates cross-talk and reduces EMI/RFI interference Compatible with Windows Mac and Linux computers Compatible with Android tablets / phones with USB Host Mode (OTG) support and OS version 3.2 and above 1.52 m cable length No external power is required Compatible with Windows Mac and Linux computers and Android tablets / phones (See System Requirements) Need drivers? Click on the Support Page link on the leftSystem Requirements Compatible with Windows 2000 XP Server 2003 Vista 7 Server 2008 8 8.1 Server 2012 and 10 Compatible with Mac OS X 10.6 through 10.12 Compatible with Linux Redhat 7.3 8.0 and 9.0 (Linux Kernel 2.4.31 and above; already includes built-in drivers) Android devices will require a USB Host Mode (OTG) cable (Tripp Lite's U052-06N) to connect the U209-005-DB25 to the device.Package Includes U209-005-DB25 USB-to-Serial Adapter Cable DB9-to-DB25 adapter Owners ManualBatteries not Required to Operate