This USB (Universal Serial Bus) to Serial converter means that you can connect a RS-232 serial device such as a modem to a USB (Universal Serial Bus) port on your Desktop or Laptop PC. Compliant with USB (Universal Serial Bus) 1.1 specifications Supports RS-232 serial interface Supports up to 500kbps data transfer rate Detects USB (Universal Serial Bus) suspend condition Compliant with Windows 7/ Vista/XP/2000/ME/98SE & Mac OS 10.1~10.6 Install as a standard Windows COM port, Full RS-232 modem control signals, RS-232 data signals; Tx D, Rx D, RTS, CTS, DSR, DTR, DCD, RI, GND Supports BUS Power, no external power adapter required Supports plug & play & easy Installation Interface: USB (Universal Serial Bus) 1.1 Type A RS-232 (9-pin) Male Supported OS: Windows 7 (32/64-bit)/ Vista (32/64-bit)/XP (32/64-bit)/ 2000/ME/98SE Mac OS 10.1~10.6 Cable Length:661mm (26in.) Cable Gauge:28/24 AWG Data Rate:500kbps Power Consumption:500m A (max) Weight: 75g. (0.2 lb) Operating Temperature:0°C ~ 40°C (32°F ~ 104°F) Storage Temperature:-10°C ~ 45° C (14° ~ 113°F) Humidity:85% (Non-Condensing) Certification: CE, FCC