Specification: Main chip: FTDI FT232RL Pin Definition: TXD,RXD,GND USB interface: 2.0 The maximum speed: 3Mbps List of supported systems Windows xp,7,8,10 2,Ubuntu 11.10, kernel 3.0.0-19 3, Mac OS X 10.3 to 10.8 (32 &64 bit) 4, Mac OS X 10.9 and above(64 bit) You can download the driver directly from FTDI's website Packing list: 1 X FTDI FT232RL USB to RJ12 Cable Feanteek offers a 1-year and technical support for this USB adapter. If you meet any question, Please contact us, We will fix your issue with in 24 hours. Feantue: 1.APC Rack PDU (AP78xx, AP79xx, AP86xx, AP88xx, AP89xx) and 2G Rack Automatic Transfer Switches (AP7752, AP7752, AP7730, AP7732, AP7721, AP7723) 2patible with APC part 940-0144A 3.RJ12 to usb. Compatible with Rack PDU (AP78xx, AP79xx, AP86xx, AP88xx, AP89xx) and 2G Rack Automatic Transfer Switches (AP7752, AP7752, AP7730, AP7732, AP7721, AP7723). APC part 940-0144A 4.Set 9600 bps, 8 data bits, no parity, 1 stop bit, and no flow control to communicate Apply the port settings to establish the connection. 5.Press 3-5 times to display the username prompt.Use the default username and password of apc.