Logitech M187 RF Wireless Optical 1000DPI Ambidextrous Red mice (910-002727) BF2021 these are compatible with every

these are compatible with every power supply on the market

Logitech has different serial numbers for packaging vs

Windows 8 Pro x64

Built-in speakers make it easy to catch up with family

Logitech M187 RF Wireless Optical 1000DPI Ambidextrous Red mice (910-002727) BF2021 these are compatible with everyItem model number: 910 002727 Logitech M187 Mouse optical wireless 2. 4 GHz USB wireless receiver Logitech Options software lets you customize your device's settings Specification Input device Recommended usage Notebook Buttons quantity 3 Purpose Office Scroll type Wheel Movement resolution 1000 DPI Device interface RF Wireless Scroll Yes Movement detection technology Optical Frequency band 2. 4 Design Form factor Ambidextrous Wireless receiver