Troubleshooting Methods : ①【Q: How do we get it to change colors?】 A: When you plug it on, it starts out a randomly chosen color, then soon after it changes colors. ②【Q: Can the light of the mouse be turned off?】 A: The light of mouse will light up when it is plugged in. If you want to turn it off, please pull it out from the USB port. ③【Q: Is there any options for the light color?】 A: You cannot turn off the light on the mouse, or even keep it your favorite color. ④【Q: What is the length of the mouse wire?】 A: About 150cm (4. 9ft) ⑤【Q: What can i do if it doesn't work?】 A: Check whether you have correctly plug in the USB port. ⑥【Q: Do i need download any drivers?】 A: No, it is plug-and-play ⑦【Q: Can it be programmed?】 A: No, it is not programmable. ⑧【Q: It is a gaming mouse, can i use it for others like office?】 A: Although it is labeled for “gaming", it will work just fine with others. Features: ★Easily Accessible DPI Adjustment Default DPI: 800-1200-1600-2400DPI. You can adjust the DPI from 800-2400 DPI. Two DPI buttons are for easy change to get accurate responsiveness. ★Soothing Multi LED Light ★Strong Compatibility Compatible with most system including Windows XP, Vista, Windows 7, Windows 8. Fit for PC, Laptop, Desktop and Mac The LED light can be changed from multi colors to suit your games, style and different environment. ★Back/ Forward Buttons This mouse is not only for gamer, but also perfect for daily use. The back and forward buttons on left side can go backward to last page or go ahead to next page when browsing. ★Easy To Use Just Plug and Play. NO additional software or firmware is required. ★Customization and Comfort With ergonomic design, this mouse fits your hand perfectly. The top-notch ABS material with matte-finish texture is for durability. Specifications: ♦ DPI: changed from 800-1200-1600-2400DPI; Default DPI: 800/1200/1600/2400 DPI ♦High Resolution: 2400DPI ♦ Transport Type: Wired ♦Wire Length: 150cm (4. 9ft) ♦ Working Voltage: 5V ♦Key Life: 5 million times ♦ Working Current: less than 100MA ♦Buttons: 6 buttons with scroll wheel (Two Side-Buttons and One DPI Button) ♦ Button Life: 5000, 000 Times ♦Interface: USB ♦ Support: USB 2. 0/3. 0 ♦Luminous Mode: Colorful flashing lights ♦ Tracking Method: Optical ♦Material: ABS ♦ Net Weight: 140g-155g ♦Compatible with Windows XP, Vista, Windows 7, Windows 8 Package Contents: 1 x Wired Gaming Mouse 1 x User Manual